Tableau Interview Questions and Answers Today, Tableau is one of the most crucial tools strong-handedly ruling the software and business workplaces around. In the competitive world, the more you know about the tool, the more the chances of you getting recruited. As we know that Tableau increases the weightage of your resume, here we are presenting the compilation of 101 Important Tableau Interview Questions and Answers that help the freshers to ace the Interview. Ready? Tableau is a BI software that helps in visualizing the data in graphical format and helps in creating interactive and shareable dashboards. It makes the understanding and analysis of the data easy for the user. It helps business users in engaging with the data, to ask questions, and solve problems. So, we know that it is a bit tough to crack interviews, although you have a good knowledge of this particular skill. To boost up confidence levels in you, we strongly suggest you go through our predicted and reliable compilation of 101 Tableau Interview Questions and Answers which helps in polishing the basic knowledge much stronger. Q1. What is Tableau? Tableau is a data visualization tool (like presenting the data in the form of dashboards) that helps in simplifying the raw data into a user-understandable format. It is widely used in the Business Intelligence Industry.   Q2. Is the software ‘Tableau available for free? Yes. You can upload a file that contains the data or a spreadsheet to the ‘Tableau Public’, a free Tableau software, which helps in converting the data into interactive visualizations for easy understanding and analysis. Another free Tableau tool is ‘Tableau Reader.   Q3. Tableau Software Company was founded by? Christian Chabot, Pat Hanrahan, Chris Stolte, and Andrew Beers together founded the company Tableau Software in January 2003, in Mountain View, California.     Q4. Tableau Software Company’s current headquarters is in? Tableau Software Company’s current headquarters is located in Seattle, Washington, United States. The current CEO of this company is Adam Selipsky.   Q5. Name any three best features of Tableau.   Q6. With Tableau, are there any size limitations? No! We can import the data with no limitation of rows and columns.   Q7. Is there any data limitation with Tableau Public? Yes. Tableau Public allows only 10M rows to perform the visualizations.   Q8. Name some File Extensions in Tableau.   Q9. Tableau Desktop’s latest version? Tableau Desktop’s latest version is 2020.3 released on the 11th of August, 2020.   Q10. In Tableau, what LOD stands for? In Tableau, LOD stands for ‘Level of Detail’ Expression. These are the commonly asked Tableau Interview Questions and Answers for the fresher candidates in an Interview.   Q11. Define LOD. Level of Detail (LOD) is an expression that helps in running the data that contains many dimensions at the data sourcing level. It runs complex or difficult queries.   Q12. What does the tableau product suite consist of?   Q13. Define Data Visualization. Data Visualization is a technique that is used to represent the data in a graphical format by encoding. This technique helps the user to analyze and understand the data easily. The best examples are bar charts, pie charts, histograms, etc.   Q14. Define the Developer tools in Tableau. In Tableau, Developer tools are the tools that help in developing visualizations, reports, dashboards, and charts.   Q15. Define the Sharing tools in Tableau. In Tableau, Sharing tools are the tools that help in sharing the visualizations, reports, dashboards, and charts that are developed using the Developer tools.   Q16. The Tableau products that fall under the category of developer tools are?   Q17. The Tableau products that fall under the category of sharing tools are?   Q18. Define ‘Tableau Desktop’. Tableau Desktop is a product or a feature that helps in coding as well as in customizing reports. This tool works in creating the visualizations like charts, and reports, or the blend of them into dashboards.   Q19. Tableau Desktop is mainly classified into how many types? Tableau Desktop is mainly classified into two types, namely:   Q20. Where can the workbooks of Tableau’s Desktop Personal be distributed? The workbooks of Tableau’s Desktop Personal can be distributed either in Tableau Public or in Offline. These are the frequently asked Tableau Interview Questions and Answers for the experienced candidate in a Tableau Interview.   Q21. Where can the workbooks of Tableau’s Desktop Professional be distributed? The workbooks of Tableau’s Desktop Professional can be distributed either in Tableau Server or Online.   Q22. What is the main difference between Tableau desktop personal and professional? The workbooks of desktop personnel can’t be published online, whereas the workbooks of desktop professionals are ideal to be published online or on the Tableau server. Additionally, Desktop Professional can access all sorts of data types, whereas Desktop Personal can’t.   Q23. Define the Tableau Public Tableau Public is a product of a feature that helps in making the workbook available for all to access and download by placing the workbook in the Public Cloud of Tableau. This feature is cost-effective.   Q24. Can we save the workbooks locally using Tableau Public? The word ‘Public’ says it all. No, we can’t save the workbook locally. Instead, it uploads the workbooks into the Public cloud of Tableau through which anyone can access or download the uploaded workbook.   Q25. Define the Tableau Reader It is the feature or a product or a tool that is available for free. It allows you to view the visualizations and workbooks that are created using Tableau’s Desktop or Reader. Data filtering can be made. However, modifications to the data are restricted.   Q26. Define Filter A filter is a tool that helps in removing or restricting an unnecessary set or a range of data present in the dataset. It helps in providing accurate details.   Q27. What are the types of filters that are used in Tableau?   Q28. How do you remove the ‘Show All’ option from an Auto Filter

Basic Excel Interview Questions and Answers for Freshers Basic Excel Interview Questions and Answers for Freshers: Excel or Microsoft Excel is one of the most crucial tools, a spreadsheet, that is almost strong-handedly ruling the software and business workplaces around. In the competitive world, the more you know about the tool, the more the chances of you getting recruited. As we know that Excel increases the weightage of your resume, here we are presenting the compilation of 101 Important Excel Interview Questions and Answers that help the freshers ace the Interview. Ready? Excel is a commendable computer program without which no computer operations and computations are getting completed in any work out there. A piece of strong knowledge of Excel can place you in any kind of industry, as almost every industry is using Excel somewhere. It enriches the process of business be it stockings, rating analyzing, etc. So, we know that it is a bit tough to crack interviews, although you have a good knowledge of this particular skill. To boost up confidence levels in you, we strongly suggest you go through our predicted and reliable compilation of 101 Excel Interview Questions and Answers which helps in polishing the basic knowledge you have, much stronger. Q1. Define Excel in your own words Excel is a software of the type spreadsheet, that helps in storing data by arranging the information into rows and columns.   Q2. Excel was developed by which company? Excel was developed by the Multinational Technological Company, Microsoft Corporation. It was launched by them in the year 1985. Since then, Excel is prominently known as Microsoft Excel.   Q3. List any three operating systems that support Excel.   Q4. Name some important features of Microsoft Excel. The most important features one would notice in Microsoft Excel are:   Q5. Name some characteristics of Microsoft Excel. Here are a few characteristics of Microsoft Excel.   Q6. Name the languages and tools used in developing Microsoft Excel.   Q7. List the file formats Microsoft Excel uses.   Q8. Which excel type is the smallest of all? The Excel Binary Workbook with an extension of .xlsb is considered as the smallest one among all the supportive extensions.   Q9. Tell us a few ways you use to reduce the size of an excel. Here are a few ways using which we can reduce the size of Excel.     Q10. How will you clear formatting in Excel? First of all, we need to select the rows and columns which we want to de-format. Then, the path we need to follow to clear the formatting is: Home -> Editing group -> Clicking the arrow next to the clear button -> selecting a clear format from the dropdown.   Q11. Define Macro. In Excel, a Macro is a code or a set of actions that we use to perform certain tasks repeatedly. In such a case, we record the action or actions as a unit, called macro, to automate the tasking. Now, we can run the tasks numerous times with just a click.   Q12. What is the key that helps in debugging the formulas, quickly? In Microsoft Excel, selecting a function and clicking the F9 key on the keyboard helps in checking the formulas and debugging them, quickly.   Q13. What does the F12 key do in Excel? In Excel, clicking a simple F12 key on the keyboard pops up a dialog box telling you to save the current file. Simply, It just works exactly like a “Save as” button.   Q14. Explain the basic cells present in Microsoft Excel. Each basic cell is nothing but the junction where a cell of each row and column meets. It is where we can fill with an element of the data to be stored. Each cell is assigned a unique address, and as the columns are named A, B, C… while rows are assigned with labels 1, 2, 3…, by default, the first cell/junction’s address is A1, the next one is B1, and so on…   Q15. Coming to the Excel formulas, What is their order of precedence of operations? Excel follows the ‘PEMDAS’ rule, i.e., (We can use BODMAS rule too)   Q16. Is it possible to rearrange the cells in Excel? In Excel, we can perform the insertion and deletion operations in the following ways   Q17. List the data formatting ways for cells, in Excel. In excel, the cells can be formatted using the main attributes and their elements such as:   Q18. How to add a comment in a cell, in Excel. In Excel, to add a comment to a cell, all you need to do is to give right-click on the cell and then select the ‘insert the comment’ option. You can always edit or delete the comment you entered.   Q19. How can the cell with a comment differ from the cell with the data? To make it easy for recognition, the cell in which you add a comment will be marked with a red/purple flag on the top right corner of the cell. The cell with the red mark in the L column represents that the cell has a comment.   Q20. Define Ribbon. In Microsoft Excel, a Ribbon is a header or topmost part that contains a set of buttons and tabs through which you can navigate to perform certain commands. They help in understanding and using the commands easily and quickly, and each component is further divided into a group of commands making up a category. These are the generally asked Excel Interview Questions and Answers for the fresher candidate in the Interview.   Q21. What are the major components you find in the ribbon? Mainly, there are 4 basic components present in the ribbon, namely:   Q22. Name the tabs that are present in the ribbon. On one sight, we find 7 tabs in the ribbon. However, each tab has several other commands within. The 7 tabs are:   Q23. How does

Cyber Security Interview Questions and Answers Today, Cyber Security has become a major factor that is needed to be implemented on every application and software we run, out there. In this competitive world, the more you know about this ruling technology, the more chances of you getting recruited. As we know that knowledge of Cyber Security increases the weightage of your resume, here we are presenting the compilation of Important Cyber Security Interview Questions and answers that help the freshers to ace the Interview. Ready? Cyber Security technology has made its place into almost every sector we see, be it military, Health, Business, everything that data deals in, security and with computers and other devices. The more the technologies are showing up, the more the volume of the threats of data theft and increasing is happening. As the exposure of data to the black and gray hat hackers will lead to negative consequences, various types of cyber securities are developed and being developed. Finding loopholes and clearing them before the attacks happen is the policy leaving no room for hacking. So, we know that it is a bit tough to crack interviews, although you have a good knowledge of this particular skill. To boost up the confidence levels in you, we strongly suggest you go through our predicted and reliable compilation of Cyber Security Interview Questions and answers which helps in polishing the basic knowledge much stronger. Q1. What is Cyber Security? Cyber Security is a technology we use to protect or recover the software, hardware, and the data in the servers, network, other devices, e-systems, etc from malicious attacks. Q2. List the types of Cyber Security. Cyber Security is of 5 types, namely: Q3. List the elements of Cyber Security. The most popular Cyber Security elements are: Q4. Name some common types of Cyber Attacks Q5. List the advantages and benefits of Cyber Security. Q6. Explain the word ‘Cryptography’ in your own words. Cryptography is a technique that helps in protecting the data from the accession and understanding of third parties which are popularly termed as adversaries. The data can be read by the sender and receiver only. Q7. Cryptography is the combination of? Cryptography is all about the ‘Encryption’ and ‘Decryption’. Q8. What is encryption? Encryption is all about transforming the human understandable language into the coded language for security purposes. Encryption: Text data —– key——> Cipher Text Q9. Name some popular encryption algorithms Q10. What is decryption? Decryption is the opposite process of encryption. It is all about transforming the ciphertext formed through encryption into the original readable text using the key. Generally, this process happens when the text reaches the sender to the receiver. These are the commonly asked Cyber Security Interview Questions and Answers for fresher candidates. Q11. Name the algorithm which is said to be best for both encrypting and decrypting. The Advanced Encryption Standard which is abbreviated as AES is the algorithm that is best suitable for the Encryption and Decryption process. It is highly used and trusted by the U.S. government and other popular organizations. Q12. Give a real-time example where we find Cryptography. If we see the Whatsapp chat carefully, we will find a label stating ‘End-to-End encryption’ whose actual meaning is that the message you send is encrypted immediately after you crush the send button. If anyone tries to read the message in between using the attacking mechanisms, they may fail as the data is encryption. Once the data you have sent reaches the other end (receiver), then the data gets decrypted and makes it into the original text making the recipient read it easily. Q13. Define the term ‘Symmetric Encryption. Symmetric Encryption is a process in which the same key, which is known as a secret key, is used for both encryption and decryption of the data. Q14. Define the term ‘Asymmetric Encryption. Asymmetric is a process of cryptography in which we use different keys for encryption and decryption. For encryption, we use the public key and for decryption, we use the private key. Q15. Tell us the differences between Symmetric and Asymmetric Encryption. Q16. Symmetric Encryption is often used to? Symmetric Encryption is often used to transfer data in bulk amounts; so that it would be easy for computations as the encryption and decryption are also done through a single key known as the secret key. Q17. List any two Symmetric Encryption Algorithms. Q18. Asymmetric Encryption is often used for? Asymmetric Encryption is often used for exchanging the secret data keys securely, as two different keys are handling the cryptography process here (Public one for Encryption and a private one for Decryption). Q19. List any two Asymmetric Encryption Algorithms. Q20. Define ‘Data Leakage’. Data Leakage is a process of transferring data illegally or unauthorizedly, to the outside world through the mediums like email, laptops, optical media, USB, etc. This can be prevented using the ‘Data Leakage Prevention Tools’. Q21. Data Leakage is mainly categorized into how many types? Data Leakage is majorly categorized into three types, namely: Q22. Define Accidental Breach. An accidental breach is a data leaking process in which the entity sends the information to an unauthorized system or account or person due to the fault, unintentionally or accidentally. Q23. Define Intentional Breach An intentional breach is a data leaking process in which one authorized entity sends the information to an unauthorized entity intentionally on purpose. Q24. Define System Hack. System Hacking is a data leaking process in which the data is hacked by hackers using hacking techniques. Q25. Name some hacking techniques used in system hacking. Q26. What is an OSI model? The OSI Model refers to the Open Systems Interconnection Model which is a framework that tells us how the information is passed from a software application of one device through the physical medium and functions of the networking system to the software application in the other device. Q27. What are the layers we find in the OSI model? The layers in the

Devops Interview Questions and Answers for Experienced DevOps is the set of practices that combines software development and software operations to optimize the development life cycle and provide delivery continuously with high software quality.  The DevOps Engineer is the most demanded job at present. Given below are the set of Basic Interview Questions for freshers and Experienced candidates in a DevOps  Interview.  These questions are designed by the professional experts of our institute after extensive research. Q1. What is DevOps? The name DevOps states it clear that it is the collaboration of Development and Operation practices in an organization. DevOps is not a tool or framework. It is the combination of tools that helps in automation of the complete infrastructure. DevOps is primarily the implementation of Agile methodology on both the Development and Operational side of the process. Q2. What are the benefits of NoSQL? A non-relational and schema-less data model Provides low latency and high performance It is highly scalable Q3. What is the need for DevOps? The purpose of DevOps is to deliver a faster and better application to meet the demands of the user and benefit the organization. It also helps rapidly in the deployment process compared to other tools. Q4. List the key aspects or principles behind DevOps? The key aspects or principle behind DevOps are listed below Security Automation Continuous Integration Continuous Monitoring Infrastructure as a Code Continuous Deployment. Q5. What are some of the popular tools for DevOps? Listed below are some of the popular tools for DevOps Git Jenkins Ansible Puppet Nagios Docker ELK (Elasticsearch, Logstash, Kibana) Q6. How to make sure that New Service is ready for the Products Launched? Monitoring Backup System Recovery plans Load Balancing Centralized logging Q7. What language is used in Git? Git is written using the C language. Since it is written in C language it’s easy to reduce the overhead of runtimes. Q8. What do you mean by SubGit? SubGit is the tool that is used for migrating SVN to Git. This creates a writable Git mirror of the local or remote Subversion repository. Q9. List the Advantages of Ansible? Idempotent Very easy to learn Very low overhead Good performance Declarative, not procedural Agentless, it does not require any extra package or daemons to be installed Q11. How DevOps is helpful to developers? It helps fix the bug and implement new features quickly. This provides clarity of communication among team members. These are the Basic Interview Questions that are asked in a DevOps Interview to freshers.  Q12. What is a Docker? Docker is the containerization technology that packages the application and it dependencies together in the form of containers to make sure that the application work easily in any environment. Q13. Name the popular scripting language of DevOps? The popular scripting language of DevOps is Python. Q14. What is a Docker image? Docker image are the source of Docker container. Or we can define Docker images are used to create containers. Q15. What is kernel? A kernel is the lowest level of easily replaceable software that interfaces with the hardware of your computer. Q16. What are Vagrant and its uses? Vagrant are used as virtual box that hypervisor the environments in the current scenario and also it supports the KVM. It is the tool that is used for creating and managing environment for developing and testing software. These are the General DevOps Interview Questions that are asked to a fresher in the DevOps interview. Q17. What is the concept of sudo in Linux? Sudo is the utility for Linux and Unix based systems that provide an efficient way to permit specific users to use the specific system commands from the root level of the system. Q18. What is a Jenkins Pipeline? Jenkins Pipeline is a suite of plugins that supports the implementation and integration of constant delivery of pipelines to Jenkins. Q19. What is docker-compose? When you want to run various docker containers, during that time you have to create the docker-compose file and type the command docker compose-up.  This, in turn, will run all the containers mentioned in the docker-compose file. Q20. What are the platforms does Docker run on? Docker runs only on the Linux and Cloud platforms. Linux: Gentoo ArchLinux CRUX 3.0+ CentOS 6+ RHEL 6.5+ Fedora 20+ openSUSE 12.3+ Ubuntu 12.04 LTS+ Cloud: Amazon EC2 Rackspace Microsoft Azure Google Compute Engine. Also, it is to be noted that Docker does not run on Mac or Windows as there is no support. We can use it for testing purposes only that too in Windows. Q21. How to stop and restart the Docker container? To Stop the container:  Enter the docker stop container ID To restart the Docker container:  Type the docker restart container ID. These are the Common Interview Questions for freshers in the DevOps Interview. Q22. What is Scrum? The Scrum is used in dividing the complex software and product development task into smaller chunks by using iterations and incremental practice. The time duration of each iteration is 2 weeks. Q23. What are the areas where the DevOps are implemented? Production Development IT Operations development Creation of the production feedback and its development Q24. What are the advantages of DevOps regarding Technical aspects? The technical benefits are listed below. Manpower is reduced. Software delivery is continuous. Reduces Complexity in problems. Faster approach to resolve problems. Q25. What do you mean by the “Index”  or ” Staging ” area on the GIT? Prior to committing the file, it should be formatted and reviewed on the intermediate area which is known as “Staging Area” or ” Indexing Area” #git add List the advantages of  DevOps regarding business aspects. The Business benefits DevOps is listed below. Stable operating environments. More time gained to Add values. A high rate of delivering its features. Enabling faster feature time to market. DevOps Training at O7 Solutions provides the necessary professional training to the students and train them efficiently to equip themselves in a professional environment. Q26. Differentiate 

Cloud Computing Interview Questions For Freshers Today, Cloud Computing has become a boon to many of the major enterprising applications that are ruling the world, out there. In this competitive world, the more you know about this ruling technology, the more the chances of you getting recruited. As we know that knowledge upon the Cloud Computing increases the weightage to your resume, here we are presenting the compilation of 100 Important Cloud Computing Interview Questions for Freshers that help the freshers to ace the Interview. Ready? Waving goodbye to the tradition of using several servers for each of the computations or parallel transactions needed, here we are, with the godfather of all the previous systems. Yes, We are talking about Cloud Computing that networks us to the warehousing of data or is the data access and must say, all the data is provided with high security. Cloud computing is super convenient to use, to access our data from any place through a single site rather than from several servers and a lot more advantages. All those companies need to do is rent or buy the buckets from a cloud service provider to store or access the data they own by their application. Yes, it is a vast subject to know, but don’t worry, we’ve got your back. So, we know that it is a bit tough to crack interviews, although you have a good knowledge of this particular skill. To boost up the confidence levels in you, we strongly suggest you go through our predicted and reliable compilation of 101 Cloud Computing Interview Questions which helps in polishing the basic knowledge much stronger. Q1. What is the cloud? The cloud is a combination of infrastructure/resources like networks, servers, hardware, interfaces, storage, interfaces, etc, that help in computations as a service. Q2. List the different users of the cloud Cloud mainly has three types of users. They are: Q3. Define Cloud Computing. Cloud Computing is nothing but an app-based software infrastructure that provides a network of numerous remote servers that are hosted on the Internet. We can store the data into those remote servers and can access the stored data through the Internet. These networks of servers have replaced the PCs or local servers and are used to store, manage, and process data securely. Q4. What are the features of Cloud Computing? Q5. List the benefits of Cloud Computing. The major benefits of Cloud Computing are : Q6. Explain on-demand functionality in cloud computing. On-demand functionality is all about providing access to the virtual, configurable shared IT resources like networks, servers, apps, storage, service, etc, based on the demand made through the subscription. Q7. Name some Cloud Service providing companies. Q8. List the properties of Cloud Computing. There are 6 properties of cloud computing, mainly. They are: Q9. Define the architecture flow of the cloud. User -> User Interface -> System Management -> Provisioning Services -> Cloud Server -> Web Application Q10. Mention any two platforms that are used for cloud computing on a large scale. These are the commonly asked Cloud Computing Interview Questions and Answers for Freshers and Experienced candidates in an Interview. Q11. How does Disaster Recovery work in Cloud Computing? The cloud is hosted with the strongest and most healthy backup as well as some good recovery solutions that help us in getting our lost data back. Q12. List the components that are majorly required in cloud architecture. The list of components are: Q13. List the phases involved in cloud architecture The phases that are involved mainly involved in cloud architecture are : Q14. Name the building blocks present in cloud architecture. The building blocks that we find in the cloud architecture are: Q15. Tell us any two business benefits of cloud architecture. Q17. How Cloud storage is different from traditional service? Capital expenditure and security are what we should talk about here. Unlike having a lot of local servers in applying for parallel transactions that cost a fortune, all you need to do now through the cloud is to buy or rent some buckets and the things you are going to deal with, be it data storage, access, or any other computation. Here, you can increase or decrease the usage of buckets based on the need, reducing the cost, and providing a secure room to the data. Q18. In Cloud computing, what does the term ‘Buckets’ mean? Buckets are the containers that are used to store and hold the data. Data that we store in the cloud storage should be present in the buckets. You can store or retrieve the data, be it of any amount, from the buckets you own, anytime and anywhere through the web. Q19. Give an example of the pubic storage system that offers buckets Amazon S3 bucket, powered by Amazon Web Services, is a public cloud storage resource. It is an object storage service. Q20. Tell us about the flexibility of bucket owning/renting with an example Let us consider the festive environment. Coming to the e-commerce sites, they get lots of traffic during the festival seasons due to the announcement of offers. When there is a chance of an increase in traffic, the data storage or access will be more for the application. In such cases, they rent more buckets for the computations and once the season is done, they can release the buckets. Traditionally, in such cases, buying servers cost a fortune. But in the case of a cloud, renting the resources in need – drops the cost from the hill to a mole. Q21. Relate remote working to the Cloud. Remote Working is the best solution that the Cloud provides. You don’t need to work on-site anymore. Just connect and start working or access your data. The best example is the happening of collaboration between the teams in case of sharing the documents, or you, uploading the documents to your cloud gives you a positive point of accessing those documents from any other device in which your cloud

Android Interview Questions For Fresher Android is one of the most popular mobile platforms, an OS, ruling the process of running the devices successfully, out there. In the competitive world, the more you know about the technology, the more the chances of you getting recruited. As we know that Android increases the weightage to your resume, here we are presenting the compilation of 101 Important Android basic Interview Questions that help the freshers to ace the Interview. Ready? Android is an ideal and complete set of software that consists of the OS, middleware, and the most important mobile applications one looks for. As Android OS is open-source and by its strong compatibility, the OS works on various hardware suppliers like Samsung, OnePlus, Google Pixel, HTC, Sony, etc. So, the customers have wider choices to pick out a product based on the manufacturer they like. The cherry on the top is – Android products are cheaper compared to Apple’s IOS. So, we know that it is a bit tough to crack interviews, although you have a good knowledge of this particular skill. To boost up the confidence levels in you, we strongly suggest you go through our predicted and reliable compilation of Android Interview Questions which helps in polishing the basic knowledge much stronger. Q1. What is Android? Android is a package of software that mainly consists of an Operating System, along with the middleware and hundreds of needed applications. It is an open-source framework and relies upon Linux that helps in developing advanced and user-friendly applications. Android works on many hardware manufactured supplies such as OnePlus, Samsung, Sony, etc. This OS was developed by Google and supports various touch screen devices such as Tablets, Cell Phones, Televisions, etc. Q2. Explain the android activity life cycle? Have a look at the picture below, to understand the life cycle process easily. Q3. Describe Android Architecture? The Android Architecture consists of a stack of prominent elements that are helpful to run a device. It is organized in layers. The architecture is comprised of five levels, namely : Applications Android Framework Android Runtime Platform Libraries Linux Kernel Q4. What is an Activity? An activity is a screen with which the user interacts, precisely, a user interface such as a window or frame on which we can input data or we can get the output. The best examples are the pop-up windows, web pages, any interface with which you interact on the screen. Q5. What is the APK format? APK is an abbreviation for ‘Android Application Package’ which is a kit in the file format used on the Android Operating system and on other OS distribution systems that support it. This file formatted package consists of the software code and media needed and is mainly used to install various supported files which can be games, applications, etc. Q6. What is the Intent in Android? The intent is a messaging element that passes the information from one application to the other by raising the requests. It displays the notification or pop-up important messages to the user from within the Android enabled device on the interface/screen itself. It alerts the user about the happening of an event. If we think that all the components of an Android are isolated, the only way to arrange communication between them is through intents. Q7. What are the types of Intent? There are two types of Intents in Android, namely : Implicit Intents: Application doesn’t define its specific target component in an Intent to be raised. Explicit Intents: Application defines its target component in an Intent to be raised. Q8. What is an Explicit Intent? Explicit Intent is an Intent where the application defines its specific target when its Intent to be raised. Here, the developer has control over which class should be launched. Intent i = new Intent(this, 3rdQuestion.class); startActivity(i) Here, from the current page, the 3rdQuestion (defined target component) is going to be opened once the intent object is passed through the startActivity(). Q9. What is an Implicit Intent? Implicit Intent is an Intent where the application doesn’t define its target when its Intent to be raised. It is the work of the android operating system to filter out which component is going to give a response to the action. Intent i = new Intent(this, Uri.parse(https://o7services.com/)); startActivity(i) Here, from the current page, the https://o7services.com/ will be opened directly (as no inner component is specified) once the intent object is passed through the startActivity(). Q10. What is the action? In Android, most of the functionalities are done with help on intended actions. An Action in Android technology is nothing but the thing the user wants to do with the applications in android or what he expects to get as a response when the intents are raised. Simply, the changes expected to be done on the screen of the interface when the intents are raised. The above are the commonly asked Android Interview Questions for Freshers and Experienced candidates in an Android Interview. Q11. What is ADB? ADB is an abbreviation that stands for ‘Android Debug Bridge’, which is a command-line tool that allows the developers the power to perform and execute the remote shell commands. This tool helps in communicating with and controls Android devices and computers or other supportive devices connect over a USB port. Simply, Allowing and controlling the communication exchange towards and from the emulator ports is its basic function. Q12. What is ANR? ANR is an abbreviation that stands for ‘Application Not Responding’. It is a dialog or message box that gives an alert message about the unresponsiveness of an application, whenever the application takes a long time to respond for intent or action. Q13. When does ANR occur? ANR is a dialog box that informs the user about the unresponsiveness of an application. There are two possible conditions where ANR dialog is expected to be displayed. When the User Interface thread takes around 5 seconds or much more time to get executed. In such

Javascript Interview Questions and Answers To prepare yourself for these job positions you must be aware of the Commonly asked JavaScript Interview Questions and Answers. Here in this blog, we have compiled a set of Important Javascript Interview Questions and Answers and these questions have been compiled in the perspectiveto give equal emphasis for both fresher and experienced candidates JavaScript was created to give little more pep to the web pages and improve them as the basic tag was not fascinating enough. Ever since its evolution, JavaScript has proven its capabilities and hence, big IT giants like Google and Facebook are using JavaScript. Now, it is used to make desktop-like and complex web-applications. And in addition to it, Node.js has made it more popular to design server-side software. And since, it’s just the beginning, there is going to be a huge growth in the requirement of JavaScript professionals in the industry.  We know it is hard to face an interview, even when you have the desired knowledge and skill set. So for that we have brought up a complete reference for you to have confidence on your JavaScript skills.  So go through this collection of a 101 most common and predicted interview question and answer series that will help you clear your basics and will help you face the interview with confidence.  Q1. What is JavaScript? JavaScript is an interpreted programming language with great object-oriented capabilities and is very lightweight. It is used to manipulate HTML as well as CSS to make web pages interactive. The functionality of JavaScript lets you do calculations, validate, and manipulate data.  Q2. Name the founder of JavaScript and in which year it was created? JavaScript was founded by Brandan Eich in 1995. List some of the data types supported by JavaScript. Here are some of the data types supported by JavaScript: Null Boolean String Number Object Symbol Undefined Q3. Mention some features of the JavaScript Language. Although JavaScript has a lot of features, a few of the important ones are: JavaScript is interpreted and a very lightweight programming language JavaScript is an open and a cross-platform scripting language By using JavaScript, it is easy to design network-centric applications It is complementary to Java Q4. Is JavaScript case-sensitive in nature? Yes, JavaScript is a case-sensitive language. The variable names, keywords, function names, and other phrases must be written in a correct combination of capitals and smalls. Q5. List some advantages of using JavaScript Some of the advantages of working with JavaScript are: Increased interactivity Rich interfaces Less interaction with the server Visitors can see immediate feedback Q6. Is there any connection or similarity between Java and JavaScript? No, there is no similarity between Java and JavaScript. Even though their names are similar, there is nothing in common for their working. JavaScript is just coded programs that can be added to HTML pages whereas Java is a complete full-stack programming language. Q7. How can you debug JavaScript? JavaScript can be debugged using various methods like: By using JavaScript debuggers The console.log() method By using the ‘debugger’ keyword Q8. How will you create an Object in JavaScript? We can easily create an object in JavaScript as it is also an object-oriented language. We use the following syntax for creating an object:  Var emp = { Name: “O7 Solutions” }; Q9. How will you create an array in JavaScript? Creating an array is very simple in JavaScript, you can use the array literals for creating arrays. var x = []; var y = [1, 2, 3, 4, 5]; Q10 . Can you assign an anonymous function to a variable in JavaScript? Yes, we can assign an anonymous function to a variable. We can also pass it as an argument for a different function. Q11. What is called the scope of a variable in JavaScript? The scope of any variable is the defined region in which that particular variable can be used.  Q12. How many scopes of a variable does JavaScript have? JavaScript has two scopes of any variable, local and global Local Scope: A variable having local scope can be assessed only within the function where it is defined. Parameters of the functions are local for the variable. Global Scope: A variable having global scope in visible and accessible anywhere in the JavaScript code. These are commonly asked JavaScript Interview Questions and Answers for Fresher and Experienced candidates. Q13. Explain the use of ‘this’ operator in JavaScript ‘this’ is a keyword in JavaScript and it is used to refer to the object where it belongs. Depending on where it is used, it can have different values. For example, when used in a function, it refers to the global object and when used in a method, it refers to the owner object. Q14. What is the ‘Callback’ function? The ‘Callback’ function is a very simple JavaScript function that is passed as an argument to a method. This function is executed after another function has completed its execution. In JavaScript, functions are objects and hence they can accept other functions as arguments and also, they can be returned as the output of any function. Q15. What do you understand by ‘Closure’ in JavaScript? Closures are automatically created whenever there is an incident in which a variable defined outside the scope is being accessed. It is used to give access to the outer function’s scope from the inner function. In JavaScript, a closure is created every time a function is created. Q16. Explain the use of the ‘TypeOf’ operator in JavaScript. The prime use of the ‘TypeOf’ operator is to fetch the data type of its operand. It is a unary operator and is placed before the operand to fetch its type. The operand is allowed to be any data structure or literal. It returns a string that indicates the data type of the operand. Q17. Depict how to create a cookie in JavaScript. In JavaScript, a cookie can be created easily with the help of document.cookie object, syntax of which is as follows: document.cookie = “key1 = value1; key2 =

NodeJs Interview Questions Node.js is a Javascript runtime environment that can be deployed on the server side to execute Javascript codes. Node.js can be deployed on Windows, Linux or Mac Systems, thus making it a cross-platform solution. By allowing developers to write Javascript code which can be executed on the Server Side, Node.js provides the advantage of unifying application development using Javascript for both Client-side and Server-side rather than using different languages. Javascript is a popular language which is used by millions of developers around the world and this makes the learning curve easier to learn Node.js both by Javascript developers and complete beginners. Node.js is one of the most sought out skills with a lucrative salary for developing web applications. Becoming proficient in Node.js is also important to become a MEAN or MERN stack developer. Get prepared with most frequently asked but important interview questions to prepare yourself for this high paying job position. This blog gives you a set of 101 Important Node.js Questions and answers and these questions have been compiled to help both freshers and experienced candidates. We wish you all the best for your Interview!! Explain Where Node.js can be used? Node.js can be used for Real-time web applications, Network Applications, Distributed Applications and for any General Applications Can you explain how Node.js works? Node.js works on V8 Virtual Machine Environment which uses Javascript as its Scripting Language Explain about Event Driven programming?? It is a Programming Paradigm where the events like Messages or threads define the flow of the program. This application architecture has two sections – Event Selection and Event Handling What is Node.js? Node.js is an Asynchronous, Event-driven based Javascript Run-time. It is designed to build and handle scalable Network Applications. Explain the key advantages of using Node.js? The non-blocking I/O is the prominent feature of Node.js and hence there is no need for Locks. This helps in building reasonably scalable systems. What are the types of API functions in node.js? There are two types of API functions, they are Is node.js Single Threaded? Yes. That is the advantage of Node.js as it is designed for asynchronous processing on Single Thread and it is believed that more performance and scalability can be achieved for web loads than typical thread based applications. How Control Flow controls the Function Calls? Explain the tasks that should be done asynchronously using the Event Loop? List the arguments of async.queue? There are two arguments, namely the Task Function and Concurrency Value. These are the commonly asked Node.js Interview Questions and Answers for the Fresher graduates. What is the event loop in Node.js? This is a loop which process external events and converts them into callback invocations. So for I/O Calls, node.js can switch from one request to another. Why node.js gaining attention from Java Programmers? Node.js is a loop based Server for Javascript which gives the ability to write JavaScript code on the Server to access HTTP Stack, file I/O, TCP and Databases very easily by the programmers. This feature is gaining attention from Java programmers. Why is there no Blocking of I/O Operations problem in Node.js? Because Node.js overcomes this problem by using the Event based Model instead of Threads based model. Explain the Differences between Ajax and Node.js? AJAX is a Client Side technology to update the contents of the page without refreshing and it is executed by the Browser. Whereas Node.js is a Server-Side Javascript technology which is executed by the Server and not by the Browser. What is the Challenge in using Node.js? The Challenge is to have one Process with One Thread to scale up on Multi Core Server. How to import External Libraries in Node.js? External Libraries can be imported using the “require” command in Node.js. Example, “var http=require(‘http’)”. Which is the most commonly used Framework with Node.js? Express Framework is most commonly used with Node.js Explain the Callback Function in node.js? It is used to handle multiple requests to the node.js Server. Callback Function allows the server to prioritize pending requests first, and call the other Function when it is finished. How Event Loop works in Node.js? All the async Callbacks are handled by the Event Loop. As node.js is a Single Threaded Event Driven language where Listeners are attached to the events. When the said event is triggered, the Listener executes the Callback we provided. All the Functions are queued in a Loop and will be executed one by one when the response is received. What is the Term I/O Means in node.js? It is called Input/Output and it accesses anything outside of the Application. It is loaded in the memory when the Application is started. These are the commonly asked Node.js Interview Questions for Freshers and Experienced candidates in an interview. How can you Access DOM in node.js No, DOM cannot be accessed from node.js Explain about the REPL in node.js? Read-Eval-Print-Loop is a virtual environment that comes with node.js. It is an Interactive language Shell used to quickly test simple Node.js/JavaScript code How to debug Node.js Application? The Debugger Utility can be used which is included with Node.js. To enable a Breakpoint at a specific position of the code, insert the “debugger” statement . What is the use of “package.json”? It is a file which contains all the metadata information about a project. This file is used by the “npm” to identify the project and install the project and all the dependencies that are listed in this file List out some of the most popular Node.js Modules? The most popular Node.js Modules are Express, Async, socket.io, Bower, gulp, grunt and browserify. Explain about “Streams” in Node.js? Streams are a type of Pipe which is used to read data from a source and pipe it to a destination. Technically, Stream is an EventEmitter with special Methods. Readable, Writable, Duplex and Transform are the types of Streams. Compare “readFile” vs “createReadStream”? “readFile” is an asynchronous method to read files. The “readFileSync” is the same as “readFile” except it

Data Science Interview Questions Career in Data Science is one of the robust careers at present. Because of the increased importance of Data, the scope and demand for the Data Scientist have been growing tremendously over the years. Based on the report submitted by IBM’s predictions the demand for the Data Scientist role would rise to 28% by 2021. For equipping oneself to a Data Scientist position, one must have an idea about the various questions that are put forth to them in an Interview. This Data Science Interview Question blog is designed specifically to provide you with the frequently asked and various Data Science Interview Questions that are asked in an Interview. These Questions are useful for the freshers who aspire to begin a career in the Data Science field. Also, the experienced candidates could brush up their knowledge in Data Science by referring to this blog before taking an Interview. Selection bias is the type of error that occurs at the time when the researcher decides about who is going to be studied. This is generally related to research where the selection of participants is not taking place randomly. It is also known as selection effects. It occurs because of the distortion of the statistical analysis and results from the way of collecting the samples. If we fail to take the selection basis into the account then a few conclusions of the study would not be accurate. The feature of a vector is an n-dimensional vector with numerical features that primarily represent some objects. When it comes to Machine learning, the feature vectors are used for representing the symbolic or numeric characteristics, that are called features. The features of an object in mathematical term and that can be easily analyzed. It was initially developed to analyze industrial accidents. Currently, it is used widely in other areas. Root Cause Analysis is the problem-solving technique that is used for isolating the faults or root cause of the problem. A factor is called as a root cause when it is deducted from the problem-fault sequence. This averts the final undesirable event from recurring. There are four types of Selection Bias and they are These are the systems of subclass information that filters the systems which are meant to predict the rating or preferences that a user would provide to a product. The R-Square can be calculated using the formula – 1 – (Residual Sum of Squares/ Total Sum of Squares) The statistical importance of insight could be accessed using Hypothesis Testing. Given below are the basic assumptions to be made for linear regression Type I error occurs if the null hypothesis is true but it is rejected. Type II error occurs if the null hypothesis is false, but it does not erroneously fail to be rejected. These are the Basic Data Science Interview Questions that are asked to a fresher in an Interview. It is the experimental design technique that is used for determining the effect of a given sample size. It is the process of filtering that is used by most of the recommender system to identify the information or patterns by collaborating viewpoints, various data sources, and multiple agents. Data Sampling is the statistical analysis technique that is used to manipulate, select, and analyze the representative subset of the data points to find the trends and patterns in larger data set that is being examined. It is the process of estimating values from 2 known values in a list of values is known as Interpolation. It is the method of approximating the value by extending the known set of facts or values. These are the Common Data Science Interview Questions that are asked to a fresher in an Interview. It is the interaction between the effects of input variable and output variable that differs among the levels of other factors. This is the statistical hypothesis testing that is used for random experiments with two variables A and B. The objective of A/B testing is to identify the changes in a web page to maximize or increase the outcome of a strategy. It is the model validation technique that is used for evaluating how the outcomes of the statistical analysis would generalize to the independent set of data. This is mainly used in the background where the aim is to forecast and one needs to estimate the accuracy of the model that would accomplish the practice. The objective of cross-validation is to term the data set for testing the model on the training phase to limit the problems and overfit the insight and to generalize the independent data set. No, as in some cases, they only reach a local optimum or local minima point. They would not reach the global optima point. It is governed by the data and its starting conditions. These are the Basic Data Science Interview Questions that are put forth to a fresher in an interview. The drawbacks of the linear model are as follows They are extraneous variables in the statistical model that correlates inversely or directly with both the dependent and independent variable and estimates fail to account for the confounding factor. This is the theorem that describes the result of performing the same experiment in many numbers of times. It forms the basis of frequency-style thinking. It states the sample mean, sample variance, and the standard deviation converge to what they are estimating. This is the traditional database schema with the central table. Satellite tables map IDs to physical names or descriptions could be connected to the central fact table that is using the ID fields. The tables are known as lookup tables and they are useful in real-time applications since they save a lot of memory. At times the star schemas involve the layers of summarization for recovering the information quicker. You should update an algorithm when: These are the Common Data Science Interview Question that is asked to a fresher in an Interview. Selection bias is the usual and a

Selenium Interview questions and Answer Selenium Training in jalandhar provides training in the web driver, IDE, grid, and continuous integration testing. Agile methodology and DevOps work culture are highlighting the need for testing in the software industry. Different tools like Selenium, testingWhiz, HPE Unified functional Testing, TestComplete, Ranorex, Sahi, Watir, and Tosca test suite are used for the different types of testing projects. Let me discuss in detail about the interview questions for Selenium Training. 1. What are the different types of automation testing? Regression testing, smoke testing, and sanity testing are different types of automation testing. 2. What are the maximum numbers of test cases that can be automated per day? The number of test cases automated per day by the tester depends upon the complexity of the web application. In general, it is estimated that tester automates 2 to 5 test scenarios per day if the complexity is low. One or fewer test cases are expected if the complexity is high. Selenium Course in jalandhar helps to prepare for the interviews with the practical oriented training. 3. What are the different types of the testing framework? Data-driven testing framework, keyword driven testing framework and hybrid testing framework are the three types of testing frameworks. 4. Explain the process of how the automation framework is used? The test automation framework starts with the process as the programming language, framework used, test base class, element locators, tests- page objects, page factory, utility functions file, property files, Test NG annotations, how we parameterize tests using excel files, Test NG annotations, parameterize tests using excel files, error screenshots, generating reports, e-mailing reports, version control system used and continuous integration tool. 5. What are the reasons to select the selenium automation tool? Free and open source, have a large user base, cross-browser compatibility, platform compatibility, and the support to the multiple programming languages such as Java, pearl, Python, PHP, and C#. 6. What are the components of selenium? Selenium IDE, Selenium RC, Selenium WebDriver, and selenium Grid are the four components of selenium. 7. Explain Selenium IDE? Selenium IDE is the firefox plugin and simplest framework in the selenium suite. Selenium IDE is used for creating scripts or test cases and Selenium RC or selenium Web Driver are used for more advanced or robust test cases. 8. Explain Selenese? In the selenium IDE, selenese language is used to write the test scripts. Best Selenium Training in jalandhar aid the students to get placed in the top companies. 9. Which browser supports selenium IDE? FireFox is the only browser which supports the selenium IDE. 10. Explain Selenium Web Driver? Selenium Web Driver AKA selenium 2 accepts the commands and sends them to a browser. It directly communicates with the browser and it is implemented through a browser-specific driver. Selenium Web Driver supports multiple languages like Java, C#, PHP, Python, Perl, and Ruby and it is the framework for automating the web application. 11. Explain the Selenium Grid? Selenium Grid is used to run the tests in different machines against the different browsers and it is used together with Selenium RC. It is used to run the test in multiple platforms and environments like different machines, different browsers, and different operating systems. 12. Describe the hub in Selenium Grid? A hub is a server which controls the test execution in multiple machines. 13. Explain node in Selenium Grid? Node is the machine which is attached to the hub and there can be multiple nodes in a single selenium Grid. Best Selenium Training Institute in jalandhar with the best reviews from the students conducts the classes with peer approach and practical approach. 14. List the different types of Web Driver APIs available in selenium? Firefox Driver, Gecko Driver, Internet Explorer Driver, Chrome Driver, HTML Unit Driver, Opera Driver, Safari Driver, Android Driver, iPhone driver, and event firing web driver are some of the Web Driver APIs in selenium. 15. Name the open-source frameworks supported by the Selenium WebDriver? JUnit and TestNG are the open-source frameworks supported by the selenium web driver. 16. What are the locators available in the Selenium WebDriver? ID, ClassName, Name, Tagname, LinkText, PartialLinktext, XPath, and CSS selector are the locators in the Selenium Web Driver. Hope this blog will be helpful for the one who is looking to kick start their career in selenium. There is a huge selenium Job Opening in jalandhar. 17. What is Selenium? Selenium is the robust test automation suite that is used for automating web-based applications. Selenium supports programming languages, multiple browsers, and platforms. 18. What are the different forms of selenium? Selenium comes in four forms and they are as followed Selenium RC Selenium IDE Selenium Grid Selenium WebDriver 19. Which browsers/drivers are supported by Selenium Webdriver? Listed below are the browser /drivers that are supported by Selenium Webdriver. Safari – SafariDriver Firefox – FireFoxDriver IOS – ios-driver/Appium Android – Selendroid/Appium Google Chrome – ChromeDriver Internet Explorer – Internet Explorer Driver HtmlUnit (Headless browser) – HtmlUnitDriver 20. What is the testing type which is supported by Selenium WebDriver? Selenium web driver is used for performing automation function and regression testing. These are Basic Selenium Interview questions asked for freshers in an interview. 21. Name the only browser that supports Selenium IDE to be used? Firefox 22. What do you mean by Selenium WebDriver? Selenium WebDriver also known as Selenium 2 is the browser automation that accepts commands and sends them to the browser. Selenium Webdriver is implemented through a browser-specific driver. Also, it controls the browser by directly communicating with it. This supports C#, Python, PHP, Perl, and Ruby. 23. List the advantages of Selenium Grid? Selenium grids allow running test cases in parallel and also save the test execution time. Selenium grid allows multi-browser testing. It permits us to execute test cases on multi-platform. 24. List the types of WebDriver APIs available in Selenium? Gecko Driver Opera Driver Safari Driver Firefox Driver iPhone Driver Chrome Driver Android Driver HTMLUnit Driver EventFiringWebDriver Internet Explorer Driver 25. What are the Programming Languages supported by Selenium WebDiver?

Python Interview Questions and Answers Python is an open-source programming language that is easy to learn. Python is the most preferred programming language among developers and thus has wider job opportunities. The following are the Python Interview Question and Answers which has been created specifically for freshers to be familiarized with the questions that are commonly asked in the Python interview. If you are interested in learning the Python language, Python Training at FITA is the right place to learn the course professionally. Python is a high-level object-oriented programming language that can run on different platforms like Windows, Linux, Unix, and Macintosh. Python is widely used in Data Science, Machine Learning, and Artificial Intelligence domain. Python enables ease of coding to develop applications. Python is used in multiple software domains and the applications are listed below. Various Types of application in Python is the commonly asked Python Interview question. Interpreted: Python is an interpreted language. It does not require a prior accumulation of code and it executes instructions directly. Free and open-source: It is an open-source project which is publicly available to use. It can be downloaded free of cost. Portable: Python programs can run on various platforms without affecting its performance. Extensible: It is highly flexible and extensible with any module. Object-oriented: Python permits to implement the Object-Oriented concepts to build an application solution. Built-in data structure: List, Tuple, and Dictionary are useful integrated data structures that are provided by Python. Learn the Fundamental knowledge to become a Python Developer through Python Online Training. Experts will give the best coaching for all students. A Python decorator is a particular change that we make in Python syntax to alter its functions easily. The primary difference between list and tuple is that the list is mutable while tuple is not. Tuple could be hashed, for instance as a key for dictionaries. FITA supports the students with a wide academic curriculum in learning the programming language and also proficiently train the students to equip themselves for a career in Python. Everything in Python is an object and all the variables hold references to the objects. The reference values are placed according to the functions and you cannot change the value of the references. If needed you can change the objects if it has mutable features. These are the syntax constructions that are used in Python, created to ease the Dictionary or List based on the existing or current iterable. Python provides two built-in types. They are Mutable and Immutable types of built-in types. Click the link below to know the Basic AWS Interview questions that are asked to a fresher in the AWS Interview. In Python, every new name introduced has its place where it lives and can be hooked. It is called a namespace. It is like a box where a variable name is graphed to the object placed. Whenever the variable is searched out in the bar, this box will be searched, to get the related object. Name space in Python is the frequently asked question in Python interview. It is a single expression, also an anonymous function predominantly used as an inline function. The lambda form in Python does not have statements since it is used to make a new function object and return them at runtime. The term Pass meaning, a no-operation Python statement, or in other words, it means a place holder in a compound statement, where there should be a blank space left and nothing has to be filled there. Iterators are used to iterate a group of elements in Python, containers like a list. A unit testing framework in Python is known as a unit test. It supports the function like sharing of setups, shutdown code for tests, automation testing, aggregation of tests into collections etc. A Mechanism to choose a range of items from sequence types like tuple, list, strings, etc. is called slicing. The means of implementing iterators are called generators. It is a normal function in Python, except it yields expression in the functions. The Python documentation string is called docstring, it is the means of documenting Python functions, modules and classes. For copying an object in Python, you can try the code copy.copy () or copy.deepcopy() for the generic cases. You cannot copy all the objects but you can copy most of them. Python sequences could be indexed in positive and negative numbers. For instance, the Positive index, 0 is the first index, 1 is the second index and so on. For the Negative index, (-1) is the last index and (-2) is the second last index and so on. To convert a number into a string, we should use the inbuilt function str(). If we need hexadecimal or octal representation, we must apply the inbuilt function hex() or oct(). Converting number to a String is the basic interview question that should be known mandatorily by any fresher before attending the Python interview. The X-range mostly returns the X-range objects, whereas the range returns the list and also uses the same memory, in spite of the range size. In Python, the module is a way to structure the program. Every Python program file is a module, which imports other modules like objects and attributes of Python. The folder of the Python program is also known as a package of modules. The package may have modules or subfolders. Local variables: When a variable is assigned to a new value anywhere within the function’s body, it’s deceived to be local variables. Global variables: Variables that are referenced only inside a function are global variables. We can share global variables across modules within a single program and also we can create a special module. It can be done by Importing the config module in all the modules of your application. The module will now be available as a global variable across the modules. For making a Python Script executable on Unix, we should do two things, Script file’s mode should be executable. The first

Java Interview Questions For Freshers Programs Java is a programming language and computing platform. It hits the top list of all the programming languages and has a wide range of job opportunities. The following Java Interview Questions for Freshers Programs have been created specifically to get you familiarize with the nature of the question you can experience during your interview for the Java Programming Language subject. If you are interested to learn the language, Java Training in jalandhar at O7 Solutions is the right place for you to explore your career.1. What are the different access specifiers for Java classes? Access classifiers are said to be the keywords that are used before a class name which refers the access scope in Java. The below types of access classifiers is highly important and also frequently asked Java Interview Questions. 2. What is the difference between an Inner class and a Subclass? It is a Core Java Interview Questions, when you are a beginner go through the answer carefully. An inner class has been nested within the other class. An inner class has access rights for the class that is nesting it and can access all methods and variables that are defined in the outer class. A subclass inherits from the other class known as the superclass. Sub-class can access all protected and public fields and methods of its superclass. 3. What is known as data encapsulation and explain it’s significance? Encapsulation is the concept which is asked frequently in the most Core Java Interview Questions for Freshers. Encapsulation is said to be a concept in Object Oriented Programming for combining methods and properties in a single unit. Encapsulation helps the programmers in following a modular approach for the software development as each object has its unique set of variables and methods and serves its functions independent of other objects. Encapsulation is also used for data hiding purpose. 4. What is the purpose of static variables and static methods? When there is a need to share a variable or a method between multiple objects of a class rather than creating separate copies for each object. To make a variable or method shared for all objects, we use. 5. What is called Loops in Java? What are the three types of loops? This is a Java Basic Interview Questions to know mandatorily before attending any interviews. Looping is used in programming to implement a statement or a statement block repeatedly. There are three types of loops in Java: a. For Loops: For loops are used in java to implement statements regularly for a given no of times. For loops are used when no of times to implement the statements is refer to the programmer. b. while Loops: While loop is used if certain statements require being implemented regularly until a condition is satisfied. The condition is tested first before implementation of statements in while loops. c. Do While Loops: Do while loop is similar to while loop with an only difference which condition is examined after implementation of statement blocks. Thus in do while loop case, statements are implemented at least once. 6. What is a singleton class? Give an example In Java, a singleton class can have only one instance and thus all its variables and methods belong to one instance. The concept of a singleton class is used for the situations while there is a requirement to limit the no of objects for a class. The good example of singleton usage scenario is while there is a limit of having an only single connection to a database due to some limitations of the driver or any licensing issues. 7. Explain the difference between break and continue statement? When you are asked to explain Break and Continue concept in Java Interview Questions for Freshers, I suggest you to give examples to attract the interviewer. Break and continue statements are the two main keywords used in loops. When a break keyword is used in a loop, instantly the loop is broken while when continue keyword is used, the current iteration is broken and the loop continues with the next iteration. When counter reaches 4, loop is broken in the below example. For (counter=0; counter<10; counter++) System.out.println(counter); if (counter==4) { break; }} When counter reaches 4, loop just jumps to the next iteration in the below example and after the continue keyword any statements are skipped for the current iteration. for (counter=0; counter<10; counter++) system.out.println(counter); if (counter==4) { continue; } system.out.println(“This will not get printed when counter is 4”); } 8. What is known as infinite loop? Explain how infinite loop is declared? An infinite loop runs infinitely and without any condition. An infinite loop may be broken by explaining any breaking logic in the statements blocks body. Infinite loop is proclaimed as follows for (;;) { // Statements to execute // Add any loop breaking logic } 9. What is known as a final keyword in Java? Give an example A constant is proclaimed using the keyword final in Java. The value may be assigned once and after the assignment, the value of a constant cannot be changed. A constant with the name const_val has been assigned and declared a value in the below example: Private Final int const_val=100 It cannot be overridden by the subclasses if a method is declared as final. This method is considered to be faster than any other method because they have been resolved at the compiled time. It can’t be subclassed, when a class is declared as final. E.g., integer, string, and other wrapper classes. 10. Explain the difference between float and double variables in Java? Float always takes about 4 bytes in memory while double takes about 8 bytes in memory in Java. The float is said to be single precision floating point decimal number and the double is the double precision decimal number. 11. How will you generate random numbers in Java? You can generate random numbers using Math.random() in the range which is greater than

Digital Marketing Interview Questions Undoubtedly, the demand for Digital Marketers is high in the market for both entry-level and experienced candidates. A recent survey has stated that the job requirement for Digital Marketing has almost doubled between the year 2012 to 2018. To qualify oneself to the position of Digital Marketer one should prepare well for the Interview and should have an idea about what types of questions are put forth in an interview. Types of Digital Marketing questions that are asked to the candidates may vary based on experience and skill sets gained. Despite the experience and skill sets, the Digital Marketing Interview Questions and Answers which are given below are applicable for both the freshers and experienced candidates. Go through these Digital Marketing Interview Questions and Answers before any scheduled job interview and have an idea about what are the questions that are asked to a candidate in an Interview. Learn to prepare all Digital Marketing Interview Questions and Answers with the support of a Digital Marketing Online Course. It is all about brand marketing activities through online channels. The various techniques included in Digital Marketing are as follows SEO, SEM, SMM, SMO and Email marketing. We can categorize the term Digital Marketing in two ways and they are Inbound Marketing and Outbound Marketing. The acronym SEO stands for Search Engine Optimization. SEO is the technique that is used to increase the quality of traffic to your website. It is performed by organic search engine results. Through Online Marketing we can reach a huge and diverse number of customers. We can understand the needs of consumers easily. Things are measurable and can be tracked easily in Digital Marketing. These are the words that are primarily used by a person or user and which is entered on the search engine to find a piece of particular information. On the aspects of SEO, it is used for better page ranking and keywords play a crucial role in it. Where and How have you used the keyword would reflect your site ranking. This makes the websites stand out in the search engine rankings. The On-page optimization is done through a live web page. Off-Page optimization is the changes performed on the offline website. This optimization boosts the search engine rankings by extracting the external links to point back to it. Pay Per Click is also called a Cost Per Click is a technique that is used to direct the traffic to websites. The advertisers usually pay the publisher ( a host or the owner of the website) when the ads are clicked in this technique. In simple, it is the amount which is spent to get an advertisement clicked. These are the Basic Digital Marketing Interview Questions that are asked to a fresher in an Interview. This is one of the marketing techniques where one could take the assistance of social media to invoke the audience’s response through different promotional activities such as Webinars, E-books, E-newsletter, PPC, and SEO. It helps the customers to learn more about a company and its products and services provided. This will eventually establish a connection between the customer and the company. There are two primary models for determining Pay Per Click and they are, It is the traditional form of marketing wherein the company constantly reaches out to its targeted audience by its promotional messages. The mode of reaching potential clients is performed through digital platforms such as emails, telephone calls, by running ads and campaigns. Google AdWords is the most popular form of PPC advertising system across the globe. This is the service that is built by Google for businesses to use this platform to display their ads on Google and its networking sites. Google Adwords permits businesses to set a specific budget for advertisement. The payments are done on clicking the ads and the advertising services focus on the keywords. These are the Common Digital Marketing Interview Questions for fresher. Keywords streaming is the process of analyzing the relevant keywords and choosing the apt keyword for websites based on the targets set in the company. It is performed to get the organic traffic and it leads to the keywords. The various types of Digital Marketing are as follows Effective PPC should be like Relevant, Exhaustive, and Expansive. Relevant: Listing out the key targeted words. Exhaustive: Rather than popular keywords it should include long key tail words. Expansive: PPC is iterative hence the keyword list must be constantly adapting and growing. Some of the top Digital Marketing Tools: Listed below are the Google Ads extensions. These are the General Digital Marketing Interview Questions and Answers that are asked to a fresher in an Interview. There are three types of SEO and they are as follows It is a new way of approach to the Web design which makes the web pages to function properly on a variety of devices such as mobile phones, desktop, and tablets.This also ensures the users have a great experience on the devices they are using that is fast and compatible with various devices and browsers. In the Flat Rate PPC model, both the publisher and advertiser agree for a fixed amount where the payment is made for each click. Predominantly the publisher has the rate card for PPC plan on the basis of the different areas of their network and website. The amount differs based on the content that primarily attracts the number of people. In the Bid Based PPC, the advertiser usually competes with the other advertisers in the private auction that is hosted by the publisher. The advertiser would inform the publisher about the maximum amount of bid that he is willing to pay. And the publisher would choose the bidder at last. The SEO practices can be classified into two types and they are, These are Basic Interview Questions that are asked to fresher and experienced candidates in the Digital Marketing Interview. Branding Direct Marketing The Advertiser here exposes the brands on the major sites