Web Development APIs and REST 3

Question 1

What is the difference between REST and GraphQL regarding data fetching?

Accepted Answer

GraphQL lets clients specify exactly what data they need

Answer

GraphQL allows clients to request precisely the fields they need, eliminating over-fetching and under-fetching problems common in REST.

Question 2

Which header is used to send a bearer token for API authentication?

Accepted Answer

Authorization: Bearer <token>

Answer

The Authorization header with the 'Bearer' scheme is the standard way to pass JWT or OAuth tokens in HTTP requests.

Question 3

What is API versioning primarily used for?

Accepted Answer

Allowing breaking changes without disrupting existing clients

Answer

API versioning lets you release breaking changes in a new version (e.g., /v2/) while existing clients continue using the old version without disruption.

Question 4

In REST API design, what is 'over-fetching'?

Accepted Answer

Receiving more data than the client actually needs

Answer

Over-fetching occurs when an API endpoint returns more fields than the client needs, wasting bandwidth and processing time.

Question 5

What does the 'Content-Negotiation' process do in HTTP?

Accepted Answer

Allows the client to request a preferred response format

Answer

Content negotiation lets clients specify preferred response formats (e.g., JSON or XML) via the Accept header, and the server responds accordingly.

Web Development Practice Test

Web Development Practice Test

Web Development APIs and REST 3