REST is a protocol that dictates a strict structure for data exchange.

• True
• False

Answer explanation

REST is a set of architectural constraints, not a protocol.

JSON is the most commonly used format for REST APIs.

• True
• False

Answer explanation

JSON is popular for being lightweight, human-readable, and language-independent.

JWT tokens used for API authorization must never expire.

• True
• False

Answer explanation

JWT tokens have expiration times and must be refreshed regularly.

gRPC uses HTTP/2 and .proto files to define data contracts.

• True
• False

Answer explanation

This enables efficient communication and standardized contracts.

GraphQL allows clients to request only the data they need.

• True
• False

Answer explanation

This reduces data over-fetching and improves query efficiency.

Which HTTP method is used to update a resource in REST?

• GET

• POST

• PUT

• DELETE

Answer explanation

PUT is commonly used for updating an existing resource.

Which header specifies the expected format of the API response?

• Authorization

• Content-Type

• Accept

• Cookie

Answer explanation

The Accept header tells the server which response formats are acceptable.

Which of the following is an example of a synchronous request scenario?

• Cake creation with progress tracking

• Cake purchase from ready-made stock

• Logging in with a delayed authentication

• Triggering a background data sync

Answer explanation

Synchronous responses happen immediately.

What is the HTTP status code for an unauthorized request?

• 200

• 401

• 404

• 500

Answer explanation

401 - This status code indicates that authentication is required or failed.

Which testing ensures the API performs well under expected user load?

• Regression Testing

• Security Testing

• Load Testing

• Unit Testing

Answer explanation

Load Testing - Load testing checks how an API performs under typical usage.