Web Development APIs and REST 5

Question 1

What is the main advantage of using JSON Web Tokens (JWT) over server-side sessions?

Accepted Answer

JWTs are stateless and can be verified without a database lookup

Answer

JWTs are self-contained tokens that encode claims, allowing servers to verify them without querying a session store, enabling stateless scalability.

Question 2

Which REST API design pattern uses a URL like '/users/{id}/orders' to represent relationships?

Accepted Answer

Nested resource pattern

Answer

Nested resources express parent-child relationships in the URL hierarchy, making it clear that orders belong to a specific user.

Question 3

What is the purpose of the 'X-Request-ID' header in API requests?

Accepted Answer

To provide a unique identifier for tracing a request through distributed systems

Answer

X-Request-ID (or Correlation-ID) is a unique identifier added to requests to enable end-to-end tracing across multiple services in a distributed system.

Question 4

What is 'API throttling' designed to prevent?

Accepted Answer

A single client from monopolizing server resources with excessive requests

Answer

API throttling limits the request rate per client to ensure fair resource distribution and protect the server from overload.

Question 5

In REST API design, what is the recommended way to handle soft deletes?

Accepted Answer

Use PATCH to set a 'deleted_at' timestamp or 'status' field

Answer

Soft deletes are typically handled with PATCH to mark a resource as deleted (e.g., setting deleted_at or is_deleted) without removing it from the database.

Web Development Practice Test

Web Development Practice Test

Web Development APIs and REST 5