▷ Top 30 Full Stack Developer Interview Questions & Answers

Full Stack Developer Interview Questions
  • To develop a project from scratch, what technologies and languages would you need or what skills a full stack developer should have?
  • Which language is the most preferred by full-stack developers?
  • Explain Pair Programming.
  • What do you mean by CORS (Cross-Origin Resource Sharing)?

Full Stack Developer Interview Questions | Web Development Interview Questions | Simplilearn

Q15. Explain a use case for Docker?

  • Docker is a low overhead way to run virtual machines on your local box or in the cloud. Although they’re not strictly distinct machines, they give you many of those benefits.
  • Docker can encapsulate legacy applications, allowing you to deploy them to servers that might not otherwise be easy to set up with older packages & software versions.
  • Docker can be used to build test boxes, during your deploy process to facilitate continuous integration testing.
  • Docker can be used to provision boxes in the cloud, and with the swarm, you can orchestrate clusters too.
  • Q17. Explain the difference between REST and GraphQL

    Ans – The main and most important difference between REST and GraphQL is that GraphQL does not deal with dedicated resources. Instead, everything is considered as a graph and therefore is connected and can be queried to app exact needs.

    Ans – Node.js is a single-threaded application but it supports concurrency via the concept of event and callbacks. As every API of Node js is asynchronous and is a single thread, it uses async function calls to maintain the concurrency. Node uses an observer pattern.

    Node thread keeps an event loop and whenever any task gets completed, it fires the corresponding event which signals the event listener function to get executed.

    11. How is GraphQL different from REST?

    This is typically a difficult question to answer, but a good developer will be able to go through this with ease. The core difference is GraphQL doesnt deal with dedicated resources. The description of a particular resource is not coupled to the way you retrieve it. Everything referred to as a graph is connected and can be queried to application needs.

    Watch this video on “Top 10 Highest Paying IT Jobs in 2021” and know how to get into these job roles.

    10. What is multithreading and how it is used?

    The main purpose of multithreading is to provide multiple threads of execution concurrently for maximum utilization of the CPU. It allows multiple threads to exist within the context of a process such that they execute individually but share their process resources.

    9. What is Continuous Integration?

    Continuous Integration (CI) is a practice where developers integrate code into a shared repository regularly to detect problems early. CI process involves automatic tools that state new codes correctness before integration. Automated builds and tests verify every check-in.

    Q23. What are the disadvantages of GraphQL?

    Ans – Disadvantages of GraphQL are:

  • You need to learn how to set up GraphQL. The ecosystem is still rapidly evolving so you have to keep up.
  • You need to send the queries from the client, you can just send strings but if you want more comfort and caching you’ll use a client library -> extra code in your client
  • You need to define the schema beforehand => extra work before you get results
  • You need to have a GraphQL endpoint on your server => new libraries that you don’t know yet
  • Graphql queries are more bytes than simply going to a REST endpoint
  • The server needs to do more processing to parse the query and verify the parameters
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