Node.js Authentication & Authorization

What is Passport.js used for in Node.js?

• Passport.js is used for database management in Node.js applications.

• Passport.js is used for routing in Node.js applications.

• Passport.js is used for authentication in Node.js applications.

• Passport.js is used for data visualization in Node.js applications.

Explain the concept of role-based access control in Node.js.

• Role-based access control in Node.js is a method of restricting access to parts of an application based on the roles assigned to users.

• Role-based access control in Node.js is a method of restricting access based on user location.

• Role-based access control in Node.js is a method of restricting access based on user age.

• Role-based access control in Node.js is a method of granting access to all users equally.

How does token-based authentication work in Node.js?

• Token-based authentication in Node.js involves generating a token (usually JWT) upon successful login, storing this token on the client side (e.g., in local storage or cookies), and sending this token in the Authorization header of subsequent requests. The server then verifies the token's authenticity and grants access to protected routes based on the token's validity.

• Token-based authentication does not involve verifying the token's authenticity

• Token-based authentication requires storing the token on the server side

• Token-based authentication involves sending the password in plain text for every request

Explain the concept of OAuth authentication and its implementation in a Node.js environment.

• OAuth authentication is a method of securing APIs in Node.js

• OAuth authentication is a process of verifying user identity in Node.js

• OAuth authentication is a way to authorize access to resources without sharing credentials. In Node.js, it can be implemented using libraries like Passport.js.

• OAuth authentication is a form of encryption for data transmission in Node.js

Discuss the importance of session management in Express.

• Session management in Express has no impact on security.

• Session management in Express is only important for styling purposes.

• Session management in Express is primarily used for server-side rendering.

• Session management in Express is important for user authentication, data management, and security.

How can JWT be implemented in Node.js for authentication?

• Use express library to generate and verify JWT tokens in Node.js for authentication.

• Use bcrypt library to generate and verify JWT tokens in Node.js for authentication.

• Use passport library to generate and verify JWT tokens in Node.js for authentication.

• Use jsonwebtoken library to generate and verify JWT tokens in Node.js for authentication.

What are the key components of user authentication with Passport.js?

• strategies, serialization, deserialization, middleware

• authentication, authorization, validation

• cookies, sessions, tokens

• encryption, decryption, hashing

Describe the process of setting up role-based access control in a Node.js application.

• The process involves defining roles, implementing middleware, assigning roles to users, and storing role information in a database.

• The process involves creating a new Node.js framework

• Role-based access control is not necessary in Node.js applications

• Roles are assigned based on user's email address

What are the advantages of using token-based authentication over session-based authentication?

• Session-based authentication is more flexible in handling cross-origin requests

• Token-based authentication is stateless, scalable, allows for CORS, and provides more flexibility in token storage.

• Session-based authentication is more secure than token-based authentication

• Token-based authentication requires constant server-side storage of session data

Explain the flow of OAuth authentication in a Node.js application.

• The access token is used for requesting authorization

• The authorization grant is exchanged for a refresh token

• The client directly accesses protected resources without an access token

• The flow of OAuth authentication in a Node.js application involves the client requesting authorization, receiving an authorization grant, exchanging it for an access token, and then accessing protected resources using that token.