API API Error Handling and Debugging

Question 1

What is a 400 Bad Request status code used for?

Accepted Answer

The client sent a malformed or invalid request

Answer

Server failure

Answer

Resource not found

Answer

Authentication failure

Question 2

What does a 422 Unprocessable Entity response typically indicate?

Accepted Answer

The request is well-formed but contains semantic errors or validation failures

Answer

Server overload

Answer

Network timeout

Answer

Authentication expired

Question 3

What is the recommended structure for API error response bodies?

Accepted Answer

A structured object with error code, message, and details

Answer

Just an HTTP status code

Answer

Plain text description

Answer

An empty body

Question 4

What does a 503 Service Unavailable response indicate?

Accepted Answer

The server is temporarily unable to handle the request

Answer

Client authentication failure

Answer

Resource not found

Answer

Request timeout on client side

Question 5

Which tool can be used to inspect raw HTTP API request and response traffic?

Accepted Answer

Charles Proxy or Wireshark

Answer

Git

Answer

Docker

Answer

Jenkins

Question 6

What is a 'correlation ID' (request ID) in API error handling?

Accepted Answer

A unique identifier per request enabling cross-system log tracing

Answer

A database foreign key

Answer

A user session token

Answer

An API version identifier