Authentication documentation in Rest API - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is authentication in the context of REST APIs?

Authentication is the process of verifying the identity of a user or system trying to access the API to ensure they are who they claim to be.

beginner

Name two common methods of authentication used in REST APIs.

Two common methods are Basic Authentication (using username and password) and Token-Based Authentication (using tokens like JWT).

intermediate

What is a JSON Web Token (JWT)?

A JWT is a compact, URL-safe token that contains claims to securely transmit information between parties and is often used for authentication in REST APIs.

intermediate

Why should API authentication documentation include error codes and messages?

Including error codes and messages helps developers understand why authentication failed and how to fix issues, improving the API usability.

beginner

What is the difference between authentication and authorization?

Authentication verifies who you are, while authorization determines what you are allowed to do after your identity is confirmed.

Which of the following is NOT a common authentication method for REST APIs?

A OAuth 2.0

B Token-Based Authentication

C FTP Authentication

D Basic Authentication

FTP Authentication is unrelated to REST APIs; OAuth 2.0, Basic, and Token-Based Authentication are common methods.

What does a JWT typically contain?

A User credentials in plain text

B Database connection details

C Only the user's password

D Claims about the user and metadata

JWTs contain claims about the user and metadata, securely encoded and signed.

In authentication documentation, what should be included to help developers handle failures?

A Error codes and descriptive messages

B Only success messages

C User personal data

D API server IP addresses

Error codes and descriptive messages help developers understand and fix authentication issues.

What is the main purpose of authentication in REST APIs?

A To encrypt data

B To verify the identity of the client

C To authorize access to resources

D To log API usage

Authentication verifies who the client is before granting access.

Which header is commonly used to send a token for authentication in REST APIs?

A Authorization

B Content-Type

C Accept

D User-Agent

The Authorization header is used to send tokens like Bearer tokens for authentication.

Explain the key components that should be included in authentication documentation for a REST API.

Think about what a developer needs to know to successfully authenticate.

Describe the difference between authentication and authorization in the context of REST APIs.

Focus on what each process does and their order.