200-901 Understanding and Using APIs Practice Question
Which HTTP header is used to specify the format of the request body (e.g., application/json) when sending a POST request to a REST API?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Content-Type
Content-Type indicates the media type of the request body. Accept indicates the desired response format. Authorization carries credentials.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Accept
Why it's wrong here
Accept tells the server what media type the client expects in the response.
- ✓
Content-Type
Why this is correct
Content-Type specifies the media type of the request body.
- ✗
Authorization
Why it's wrong here
Authorization carries authentication credentials.
- ✗
X-Requested-With
Why it's wrong here
This is a non-standard header used by some frameworks to identify AJAX requests.
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