29 Most Important Node js Interview Questions and Answers 2025

With Azure, I’ve worked on projects that involved deploying web applications using App Services, managing databases JavaScript Full-stack developer (Node.jsReact.js) job with Azure SQL Database, and implementing Azure Functions for serverless architecture. Additionally, I have some experience with Azure DevOps for project management and continuous integration. The interviewer wants to gauge your understanding of database systems and your ability to make informed decisions based on the needs of a project. A Senior Full Stack Developer not only possesses expertise in both front-end and back-end development, but also brings leadership, mentorship, and guidance to the development team. Interviewers ask this question to gauge your understanding of the expectations and responsibilities that come with the senior role. They want to know how you will contribute to the team’s success through effective collaboration, sharing knowledge, and helping other team members grow professionally.

How do you manage state in front-end applications?

Multithreading allows multiple threads to execute Full stack developer roadmap concurrently within a single process, improving the performance of applications by utilizing CPU resources efficiently. It’s commonly used in scenarios like handling multiple requests in a server environment. So, we can create dynamic content by integrating various databases and other resources. It also provides a runtime environment for running application codes.An application server has a comprehensive service layer. For example, it allows protocols such as Remote Method Invocation (RMI) and Remote Procedural Call (RPC). The Agile methodology is an increasingly popular approach to software development that emphasizes collaboration, flexibility, and continuous improvement.

Q2. Explain the concept of CSS Flexbox and its advantages.

Primarily used for server-side JavaScript execution and backend services. The result returned by require() is stored in a variable, which is used to invoke the functions using the dot notation. It is a computer environment similar to the shell which is useful for writing and debugging code as it executes the code in on go.

What is “AJAX” used for in web development?

• They combine the best features of web and mobile apps, enabling offline access and improved performance.
• In functional programming, referential transparency refers to the fact that an expression can be replaced by its equivalent value or anything having the same value without affecting the program’s output.
• In this article, we will delve into the most commonly asked AWS Full Stack Developer Interview Questions, which are beneficial for both freshers and experienced developers.
• Refs are a function provided by React to access the DOM element and the React element that you might have created on your own.
• Whenever the useState() hook is used, the value of the state variable is changed and the new variable is stored in a new cell in the stack.

When the “use strict” statement is used, the browser is instructed to use “strict” mode, which is a more restricted and safer JavaScript feature set. You can specify “use strict” at the top of a function to evaluate the JS in strict mode. In strict mode, more errors are thrown and some features are disabled to make your code more robust, clear, and accurate.

• Then outline a methodical approach to understanding, maintaining, and gradually improving older codebases.
• MongoDB utilizes sharding to support installations with extensive data sets and demanding performance requirements.
• In other words, the State of a component is an object that holds some information that may change over the lifetime of the component.
• This process involves dividing tables into smaller, related tables and defining relationships, ensuring that each piece of data is stored only once.
• In a Full Stack Developer interview, we gain a balanced understanding of both front-end and back-end technologies.