Backend Developer Interview Questions

27
Oct

junior node js developer interview questions

TestGorilla is a talent discovery platform that helps teams find best-fit candidates through skills-based sourcing, AI-powered evaluation tools. Since this cloud computing platform offers developers the chance to build scalable cloud applications, Azure knowledge can benefit Node.js developers. Git is a code version control application that helps developers monitor changes to their code.

junior node js developer interview questions

What is process.on(‘exit’) in Node.js?

junior node js developer interview questions

Parser, Ethers.js, and Request are a few other examples of libraries that developers use with Node.js. Candidates who can talk about these features are worth considering for your organization. If you’ve been searching for a Node.js developer, you may know that there are many skills to assess when hiring an applicant. A seasoned tech professional, Aseem Garg is Internshala’s Vice President of Engineering. A Full Stack Web Engineer and Android Engineer, he is responsible for leading and driving innovative technology at Internshala.

junior node js developer interview questions

Explain the crypto module in NodeJS.

A CMS (Content Management System) Full stack developer roadmap is a software platform that allows users to create, edit, and manage website content without requiring coding knowledge. It provides a user-friendly interface for handling text, images, videos, and other media. CMS platforms like WordPress, Joomla, and Drupal offer themes, plugins, and built-in SEO tools, making it easier to build and maintain websites efficiently. A web server is responsible for handling and delivering web content to users.

  • The RealLifeTesting™methodology follows the principle that the best way to assess a candidate is to provide them with tasks that reflect the work they’ll be expected to carry out.
  • Whenever an event gets fired, its listener function starts executing.
  • When hiring the right junior-level Node.js developers, it’s important to focus on the foundational aspects of their knowledge, their grasp of crucial concepts, and their potential for growth.
  • It turns JavaScript code into machine code during execution by utilizing a JIT (Just-In-Time) compiler, as do many current JavaScript engines such as SpiderMonkey or Rhino (Mozilla).
  • Data security is paramount in today’s digital landscape, and backend developers play a critical role in keeping sensitive information safe.

Where can you deploy the Node.js web application?

  • Node.js has evolved, seamlessly integrating with various front-end technologies in today’s time.
  • JavaScript data types are categorized into two parts i.e. primitive and non-primitive types.
  • Lists are very useful when it comes to developing the UI of any website.
  • With the async approach, the caller’s callback gets called only once.
  • In the event loop, there are different phases, like pending callbacks, closing callbacks, timers, idle or preparing, polling, and checking, with different FIFO (First-In-First-Out) queues.
  • MongoDB provides We read operations to retrieve embedded/nested documents from the collection or query a collection for a embedded/nested document.
  • They should be able to identify which objectives need to be accomplished first to help the project move along.

Another strategy is input validation and sanitization, which helps junior node js developer prevent SQL injection attacks and other forms of malicious input. I also use parameterized queries or prepared statements when interacting with databases to further mitigate these risks. Additionally, I implement proper encryption for sensitive data both at rest and in transit, using industry-standard algorithms and up-to-date libraries. Yes, Node.js provides a simple TCP based protocol and built-in debugging client. For debugging your JavaScript file, you can use debug argument followed by the js file name you want to debug. When functions are treated like any other variable, then those functions are called first-class functions.