Node.js API Masterclass with Express and MongoDB - Auth Protect Middleware

The video tutorial explains how to implement token-based authentication using middleware in a web application. It covers creating a protect middleware function to secure routes, verifying tokens, and handling errors. The tutorial also demonstrates how to apply this middleware to different routes and test the implementation using Postman. Additionally, it introduces a method to retrieve the current logged-in user using a token.

What is the primary purpose of using a bearer token in headers?

• To log the user out

• To store user preferences

• To encrypt the data being sent

• To authenticate the user making the request

What is the role of the Protect middleware function?

• To store user data

• To protect routes by verifying tokens

• To log user activities

• To manage user sessions

Which library is used to verify tokens in the Protect middleware?

• Axios

• Mongoose

• JWT

• Express

How is the token extracted from the authorization header?

• By encrypting the header

• By hashing the header

• By decoding the header

• By splitting the header string

What happens if a token is not provided in the request?

• The user is logged out

• An error response is returned

• The request is processed normally

• The request is redirected

What is the purpose of the try-catch block in token verification?

• To log user activities

• To store user data

• To encrypt the token

• To handle errors during token verification

What is stored in the request.user variable after token verification?

• The user's preferences

• The user's ID from the token

• The user's session data

• The user's password

Which HTTP method is used to get the current logged-in user?

• POST

• GET

• PUT

• DELETE

Why is the password not returned in the user data?

• Because it is not stored in the database

• Because it is encrypted

• Because it is not needed for authentication

• Because it is set to select false in the model

What is the benefit of using Postman for testing the Protect middleware?

• It allows for easy manipulation of headers

• It automatically encrypts the token

• It stores user data securely

• It logs all user activities