JSON Web Tokens

This video tutorial covers the implementation of authentication in a Node.js application using JSON Web Tokens (JWT). It explains the difference between public and private routes, how to set up JWTs, and integrate them into a Node.js application. The tutorial also details the process of creating, validating, and verifying JWTs, as well as understanding their structure. Additionally, it discusses setting expiration times for tokens to enhance security.

What are the two types of routes in an Express application as discussed in the video?

• Private and authenticated

• Public and authenticated

• Open and closed

• Public and private

Which of the following is NOT a feature of JSON Web Tokens?

• Data verification

• User authentication

• Data encryption

• Token expiration

What is the first step in integrating JWT into a Node.js application?

• Creating a new token

• Verifying the token

• Installing the JWT library

• Setting token expiration

What is the purpose of the header in a JWT?

• To encrypt the payload

• To store user data

• To contain meta information

• To verify the token

What does the payload of a JWT typically contain?

• The user's password

• The token's signature

• The token's expiration time

• The user's unique identifier

What is the role of the signature in a JWT?

• To verify the token's integrity

• To set the token's expiration

• To encrypt the token

• To store user credentials

What function is used to verify a JWT in Node.js?

• JWT.check

• JWT.verify

• JWT.decode

• JWT.sign

What happens if the secret used in JWT.verify does not match the one used in JWT.sign?

• The token is encrypted

• The token is accepted

• The token is re-signed

• The token is rejected

How can you set a JWT to expire after a specific time?

• By using the 'expiresIn' option

• By using the 'timeout' option

• By using the 'expiry' option

• By using the 'duration' option

What error is thrown if a JWT has expired?

• Invalid token

• Invalid signature

• Token expired

• Token not found