Node Day-4

What is middleware in Express.js?

• A built-in database

• A function that executes before the request reaches the route handler

• A method to send HTTP responses

• A way to store user sessions

Which middleware is used to parse JSON data in Express?

• express.urlencoded()

• express.static()

• express.json()

• body-parser

What does the cors middleware do?

• Manages user sessions

• Enables cross-origin requests

• Handles file uploads

• Encrypts HTTP requests

Which HTTP method is used to update existing data?

How do you access query parameters in a Node.js server without Express?

• req.query

• url.parse(req.url, true).query

• req.params

• req.body

Middleware functions in Express have access to the​ ​ (a)   ​ ​ (b)   and​ ​ (c)  

• request
• response
• next
• params
• query

The HTTP method used to request data from a server is ______.

The status code ______ represents a successful HTTP request.

Match the following

• Parses JSON request body

• express.json()

• Used for updating existing resources

• req.body

• Enables cross-origin requests

• req.query

• Retrieves query parameters from the URL

• cors

• Contains parsed request body data

• PUT

Which module is used to create an HTTP server in Node.js without Express?