Full-Stack Developer Questions et reponses d'entretien
Question 36. What is the purpose of middleware in a Full-Stack development framework like Express.js?
Middleware functions in Express.js handle tasks such as authentication, logging, and error handling. They are executed in the request-response cycle before the final request handler.
Question 37. Explain the concept of a stateless protocol and provide an example.
A stateless protocol does not store information about the state of communication between requests. An example is HTTP, where each request is independent of previous requests.
Question 38. What is the purpose of a web server and how does it differ from an application server?
A web server handles HTTP requests, serving static content, while an application server executes application code, handling dynamic content and business logic.
Question 39. Explain the concept of idempotence in the context of web development.
An operation is idempotent if repeating it multiple times has the same result as a single execution. In HTTP, safe methods (GET) are idempotent, while unsafe methods (POST) may not be.
Question 40. What is the purpose of the async/await syntax in JavaScript?
Async/await is a syntax for working with asynchronous code in JavaScript, making it more readable and allowing developers to write asynchronous code that resembles synchronous code.
Les plus utiles selon les utilisateurs :
- What is the difference between front-end and back-end development?
- What is the purpose of AJAX in web development?