In order to be a full stack developer, you need to know more than just how to code. You need to understand the entire process of creating a web application, from design and user experience to development and deployment. This means you need to be familiar with both front-end and back-end technologies.
Most web developers will need to learn several different languages in order to create websites. There are many languages that programmers use to create web applications. The most common ones are HTML, CSS, JavaScript, and PHP. HTML is used for displaying information on a website and providing links to other pages. CSS is used for styling the appearance of web pages.
JavaScript is a programming language that is commonly used for adding interactivity to a webpage. PHP is a server-side scripting language. It is used for writing programs that can be executed on a web server. All of these languages can be used together to create a website. Now getting a Full Stack Developer Course in jalandhar at O7 Solutions to develop your career. If you are new to web development, you may want to get started by learning the basics. The best way to do this is to enroll in a course.
If you’re thinking of becoming a full stack developer, or if you’re just starting out and want to know what interview questions to expect, here is a list of some of the most common full stack interview questions and answers.
In this article, we have given you full-stack developer interview question and answers that will help you to prepare for your next round of technical interview.
It’s an abbreviation for “frontend/backend/database”. In order to understand the meaning of the term, it is necessary to consider the following three components: (frontend, backend, and database) are all essential parts of any modern website or app.
1. MVC is a design pattern where each component plays a specific role.
For example, the model is responsible for storing data, the view displays data to the user, and the controller sends requests to the model and receives responses from the model.
2. On the other hand, MVP is a pattern that focuses on separating the presentation layer from the rest of the application.
This means that the view doesn’t interact directly with the model; instead, it interacts with the presenter.
The main advantage of MVP over MVC is that it allows you to reuse your view and presenter.
If you have a single page application with lots of pages, this could save you a lot of time.
However, if you’re building a mobile app, it might not be as beneficial because there will always be some kind of navigation involved.
A Model View Controller (MVC) is a software architecture paradigm that separates user interface logic from application business logic. On the other hand, Model-View-ViewModel (MVVM) is a framework that makes your UI more responsive and easy to maintain.
Pair Programming is a form of collaborative software development where two developers work simultaneously on the same computer system. This allows both programmers to see what each other is doing, and therefore reduce errors and improve quality.
The programmer who writes the code is known as the Driver and the programmer who reviews (checks code etc.) the code is known as Navigator.
Pair programming is most often used in Agile Software Development Methodologies such as Scrum and Kanban. In fact, some people say that Scrum is just one way of implementing pair programming.
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Dependency injection is a technique that allows you to pass dependencies into your constructor instead of having them passed in through the arguments.
Inversion of control is a design pattern that says “pass any object into my class” rather than passing specific objects into my class.
Continuous integration is a coding philosophy that encourages building software in small increments often called “deliverables.” This approach allows teams to build, test, and deploy multiple versions of an app simultaneously. A good example of this would be a team working on a mobile app where each version is tested on different devices.
The term “continuous delivery” refers to the process of releasing those deliverables into production. In some cases, you might see the terms combined into one word such as “continuous delivery”.
A continuous integration and delivery pipeline is a software development process in which the build and deployment pipelines are integrated together. This means that whenever a developer commits his code, the build server automatically runs unit tests and builds the app. Then, the deployer checks whether the app is working properly. If yes, he pushes the app to production. Otherwise, he rolls back the changes and tries again.
REST stands for Representational State Transfer. RESTful web services are stateless.
A graphQL query language is a query language for APIs that uses expressions to specify what requests your app needs and how the data should be returned. REST, on the other hand, is an protocol used to design systems where resources are exposed as URLs over HTTP. These URLs can be accessed by clients using any web browser or application and do not require extra libraries or tools.
We can use the following ways of enhancing the scalability and efficiency:
The get request is a GraphQL operation used to get data from the server. It takes an input type of Item and a query expression as arguments. The output of this request will be an Item instance that represents the data you requested from the server.
Post request is a method of submitting new messages to a remote system. It is the second stage of a GraphQL query. It’s executed when the client sends an HTTP post request to the server.
Put request is a method of updating existing messages in a remote system.
Delete request is a method of deleting messages from a remote system.
Retrieving information from a web server is done using the GET method. This request type is used to return static resources such as HTML files, images, and CSS stylesheets, as well as JavaScript code. In addition, it is used to make asynchronous requests without waiting for a response.
Data is sent to a web server using the POST method. In most cases, the request is sent via a form. However, there are many situations where you want to send data to a remote server without having to use a form. For example, you might want to submit data directly from a script running on a local machine. You could also use the POST method to upload files to a remote server.
Strict mode is a feature that helps prevent common programming mistakes by forcing developers to write their programs correctly. Strict mode disallows some features of JavaScript, including:
Advantages – “Use strict” is a statement that is usually placed at the beginning of every script to enable strict mode to the whole script. This makes it impossible to accidentally use global variables or make assignments that would otherwise silently succeed to assign null to something else. It makes attempts to delete undeletables properties throw where before the attempt would just have no effect.
Disadvantage – “Strict” mode is a way to turn off some features of JavaScript. For example, you might want to disable automatic semicolon insertion, or even restrict the kinds of things you can do with objects.
Long polling is a pattern in web application design where the server keeps a long-held connection with the client and sends messages continuously without waiting for the client to send any requests. This allows the server to push data to the client even though there are no active requests.
JavaScript is a language which runs in browsers while TypeScript is a superset of JavaScript and compiles down to JavaScript.
In my opinion, most would agree that both are ways to implement a modular architecture. However, there are some key differences between the two approaches. Let’s take a look at what makes each approach unique and why it might be better suited for certain situations.
CommonJS- The CommonJS specification defines a way to organize your code into separate files and load them together into a single application. This allows you to reuse common functionality across multiple applications without having to rewrite everything again and again. You can use CommonJS to build single-page apps, web servers, desktop applications, mobile applications, etc.
AMD- AMD is a specification for defining how to load JavaScript modules. Its goal is to make sure that modules loaded in different parts of an application don’t interfere with each other. For example, if you want to load jQuery once in the browser and another version of jQuery in your server-side code, you can do that easily with AMD.
So, which approach is best for me?
That depends on your situation. If you’re building a single-page app, you probably won’t need to worry about the difference between CommonJS and AMD. But if you plan to deploy your application to a server, you’ll definitely want to use AMD.
Callback Hell, or Pyramid of doom, is a common anti pattern seen in asynchronous programming code. This slang term describes a situation where there are multiple asynchronous functions dependent on each other. These functions depend on one another so it gets very messy with so many callbacks nestled within so many layers. You end up having code that is difficult to understand and maintain, and looking like a pyramid as shown above.
This is because it is hard to see the flow of the application and debug issues. This is why we have the famous name for this problem: Callback hell.
Docker is a tool that helps developers create containers. A container is basically a virtual machine that runs inside a host operating system. It provides isolation from other processes running on the same computer.
Developers can use Docker to isolate their applications from their infrastructure. This allows them to deploy the same version of an app to every server they want without worrying about differences in hardware or software.
The most common tool used by developers to test their code is called Unit Testing. It helps them to ensure that they have not made any mistakes while coding. They can also run these tests on different browsers or devices to make sure that their code works across all platforms.
Yes, I am very familiar with design patterns. Design patterns are reusable components which allow us to write better code. These patterns help us to reduce the amount of code written and increase its readability.
Both management and execution are important parts of being a good manager. You need to be able to manage people and resources efficiently. At the same time, you need to be able to execute tasks quickly and accurately.
In addition to the training programs,O7 Solutions also offers a range of resources that can help full stack developers stay up-to-date with the latest industry trends. These resources include Freshers salary blog posts, tutorials, job openings and other related technology Full stack developer interview questions and answers.
In object oriented programming, when two objects share some properties but don’t necessarily share methods, we call it bridge pattern. For example, if we want to create a new class that inherits from another class, we would use bridge pattern.
GitFlow is a branching model developed by GitHub. It allows developers to keep their source code organized into branches. Branches are created based on feature requests or bug fixes. The entire team reviews a branch before it can be merged into master, and it is thoroughly tested before being merged into master. If no issues are found, the branch is merged into master.
Arrow function is a syntactic sugar for creating anonymous functions. The syntax looks like a normal function declaration except for the fact that the body of the function is wrapped in parentheses instead of curly braces.
some cases are:
Directive is a way to add custom behavior to HTML tags. They allow us to extend HTML with our own rules without having to modify the core HTML.
Component is a reusable piece of UI which encapsulates its logic and state. Components are usually built using React or Angular.
In addition to being built on Chrome’s JavaScript runtime, Node.js also allows you to create fast and scalable network applications with ease by taking advantage of its JavaScript architecture.
Express.js is a web application framework written in node.js. It provides a robust set of features for developing RESTful web services.
Socket.IO is a real-time communication library for Node.js. It uses WebSockets under the hood and works well with other libraries such as express.js.
MongoDB is a NoSQL database designed to handle large amounts of data across many machines. It stores documents, each containing key/value pairs.
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Redis is a open source, advanced key-value store. It supports persistence, transactions, clustering, replication, high availability, and automatic scaling.
As an open-source system, Kubernetes enables you to deploy, manage, and monitor containerized applications in a simple, automated manner.
With Ansible, you can automate repetitive tasks by using a configuration management tool for configuration management. It can be used to configure servers, install software packages, deploy applications, and more.
Managing development environments is made easier with Vagrant, a tool for managing virtual machines. It creates a complete machine image that contains everything needed to run a virtual instance of Linux.
Docker is an open-source project for packaging up any application into a lightweight standalone executable. This allows developers to package their app into a small self-contained unit that can then be deployed anywhere.
Jenkins is an automated continuous integration server. It helps teams build software faster by providing a central place to manage builds and test results.
Git is a version control system (VCS). It keeps track of changes made to files and folders within your computer. You can use it to keep track of projects you work on and share them with others.
GitHub is a website where people collaborate on coding projects. Anyone can sign up and create repositories to host code they write.
BitBucket is a cloud-based repository hosting service. It offers unlimited private repositories, free private repos, and enterprise plans.
JIRA is a bug tracking and issue-tracking solution. It has a simple interface and is easy to learn.
PHP, Java, Python, Ruby, C#, etc.
Javascript, CSS, HTML5, etc.
MySQL, PostgreSQL, SQLite, Oracle, MS SQL Server, etc.
The software stack consists of the following:
The acronym stands for Linux, Apache, MySQL, PHP or Perl. These four components make up the most common web development environment.
Semantic HTML is a way of structuring content so that search engines can understand what’s in it.
XHTML is an XML-based language that provides strict guidelines for creating valid markup.
JSON is JavaScript Object Notation. It is a lightweight data interchange format.
Full Stack JavaScript gives you access to all the features of JavaScript. It also makes it easier to develop cross-browser compatible websites.
Responsive Web Design is a technique for designing websites that adapt to different screen sizes. Responsive sites look great on desktops, tablets, smartphones, and even TVs.
Static web pages contain only text and images. They don’t require a database connection. Dynamic web pages connect to databases and retrieve information from them.
Frontend refers to the user interface. Backend refers to the logic behind the scenes. Full stack includes both the frontend and backend.
Single Page Applications (SPA) are web apps that load one page at a time. Multi-Page Applications (MPA) load multiple pages at once.
RESTful APIs are based on HTTP methods like GET, POST, PUT, DELETE, HEAD, OPTIONS, TRACE, CONNECT, etc. SOAP APIs are based on XML messages.
CSS Icons are small graphical elements that represent certain types of objects. You use them as placeholders for other graphics.
Registry libraries provide a central location where developers can store their application settings.
Architectural Patterns are reusable solutions to recurring problems. Design Patterns are specific solutions to particular problems.
Architectural Patterns help solve problems such as how to manage state, how to handle concurrency, how to organize code into modules, and how to separate concerns.
We need to have a clear understanding of the problem domain before we start building our architecture. Once we have this knowledge, we can then decide whether our architecture will work well with the problem domain.
Sass is an extension of CSS which provides variables, mixins, nesting, and more.
A Mixin is a function that takes arguments and returns another function. This allows us to reuse functions in various places without having to copy and paste the same code over and over again.
Coercion occurs when a value is coerced into a type. For example, let’s say you want to convert a string to a number. The string “10” would be converted to 10 because it is a valid number. However, the string “1a” would not be converted to 1 because it has characters that cannot be interpreted as numbers.
Prototype Inheritance – When a child object inherits properties from its parent, they are added to the child’s prototype chain.
Prototypal Inheritance – All the properties which are inherited from the parent object are copied to the newly created object when the parent object creates a new instance of itself.
There are four technologies in the MEAN stack – MongoDB, ExpressJS framework, AngularJS, and node.js – used to develop web applications. Developed by MongoDB founder Eliot Horowitz, it is best suited for prototyping, rapid development, and small projects. It is an ideal solution because it is easy to use and requires no server configuration.
MEAN stack is a popular choice among developers because it allows them to build fast and scalable web apps without having to learn complicated frameworks like Ruby on Rails or PHP. This makes it easier to build robust web applications.
Before ES6, variable declarations had to use one of three keywords: var, let, or const. These keywords define the scope of the variable, which determines where it can be used. For example, In JavaScript, global variables such as x can be referenced anywhere, whereas local variables are defined within functions.
With ES6, there are now two additional ways to declare variables: let and const. Let and const both introduce a new concept called block scoping. Block scoping allows us to specify what types of variables can be declared in different places. In particular, let and const are block-scoped; this means that they can only be accessed inside the curly braces ({}) that surround them. This makes them behave differently from regular variables.
Let and const don’t have temporal dead zones, meaning that they can be accessed before being assigned values. However, unlike normal variables, let and const aren’t hoisted to the top of the containing scope. Instead, they must be explicitly declared.
Event Bubbling is the process whereby events propagate up the DOM tree until they reach the document root element (the HTML tag). Once at the document root, the event handler attached to the element receives notification about the event.
In contrast to event bubbling, event capturing is the opposite of event propagation. Event capturing happens when an event propagates down the DOM tree instead of up. An event handler attached to an ancestor element will receive notification about the event. If the event handler does nothing with the event, then the event will bubble back up the DOM tree to the event source.
A base class that contains methods but no data members is called an abstract class. Concrete classes inherit from abstract classes and add data members. An interface defines a set of method signatures that an implementing class must implement.
Defer is a keyword that tells the browser not to execute code right away. Async is a property that indicates whether a function should run asynchronously. Defer executes synchronously, whereas async runs asynchronously.
A left join returns all rows from the first table along with matching rows from the second table. The result has columns for each row in the first table plus columns for matching rows in the second table.
A right join returns all rows from both tables along with matching rows from either table. The result has the same number of columns as the first table.
The first phase is the prepare phase. During this phase, the server prepares the transaction by setting its state to pending and locking out other transactions.
The second phase is the commit phase. During this phase the server commits the transaction by releasing locks on resources and updating the system’s log files.
Horizontal scaling refers to the ability to scale a single application across multiple servers or machines. Horizontal scaling is often used to increase performance.
Vertical scaling refers to the ability of a single machine to handle more requests than it was originally designed to handle. Vertical scaling is often used to reduce costs.
Critical sections are areas of code where access to shared data is restricted. They are typically used to prevent race conditions.
Numeric promotion occurs when one type is promoted to another type. For example, if you have a variable of type int and assign it a value of type long, the compiler automatically converts the value to be of type long. This is called numeric promotion.
SOLID stands for Single Responsibility Principle, Open/Closed Principle, Interface Segregation Principle, and Dependency Inversion Principle. These principles help us write clean software.
A request dispatcher is responsible for dispatching incoming HTTP requests to appropriate handlers. It also handles authentication and authorization.
A servlet filter is a component that intercepts requests before they reach the web container. Filters can perform operations such as logging, security checks, content transformations, etc.
JSP pages are HTML documents that contain embedded Java Server Pages (JSP) tags.
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Full stack course at O7 Solutions will help you gain in-depth knowledge of all the layers of a web application, from front-end development to back-end programming and database management. As a full stack developer, you would be responsible for developing and managing all aspects of a web application, and would thus be in high demand in the current job market with Full Stack Developer Salary For Freshers.
We believe in hands-on training, and our program is designed to give students the opportunity to work on real-world projects. You’ll learn all aspects of web development, from front-end design to back-end coding. And our experienced instructors will be there to guide you every step of the way. Even to get a better our Javascript interview questions and answers will help you build your career in the field of web development.
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O7 Services is a leading technology partner with ISO 9001:2015 certification, innovative solutions, and 24/7 support, ensuring business success in the rapidly evolving tech landscape.
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