expressjs 2

What is Express.js?

• A JavaScript runtime environment
• A front-end framework
• A back-end web application framework
• A package manager for Node.js

Express.js is based on which architectural pattern?

• MVC (Model-View-Controller)
• ORM (Object-Relational Mapping)
• MVP (Model-View-Presenter)
• MVVM (Model-View-ViewModel)

Which HTTP request method is used to create a new resource in RESTful API using Express.js?

• GET
• POST
• PUT
• DELETE

What is a middleware in Express.js?

• A function that handles routes
• A way to store data in a database
• A method for user authentication
• A user interface component

In Express.js, what does the `app.use()` method do?

• Create a new route
• Define a route handler
• Mount a middleware function
• Send a response to the client

What is the purpose of the 'req' and 'res' parameters in Express.js route handlers?

• To store user credentials
• To define route parameters
• To access the request and response objects
• To manage database connections

Which HTTP status code is typically used for a successful HTTP GET request?

• 200 (OK)
• 404 (Not Found)
• 500 (Internal Server Error)
• 401 (Unauthorized)

In Express.js, how do you handle dynamic route parameters in a URL?

• Using query parameters
• Using the 'body' property
• Using route parameters like '/:id'
• Using the 'headers' property

What is the purpose of the 'next' function in Express.js middleware?

• It sends a response to the client
• It terminates the server
• It passes control to the next middleware function
• It retrieves user data from a database