200-901 Understanding and Using APIs Practice Question
Which HTTP method is used to partially update an existing resource in a RESTful 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
✓
PATCH
PATCH is used for partial updates; PUT replaces the entire resource.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
UPDATE
Why it's wrong here
UPDATE is not a standard HTTP method.
- ✗
POST
Why it's wrong here
POST creates new resources.
- ✓
PATCH
Why this is correct
PATCH performs a partial update.
- ✗
PUT
Why it's wrong here
PUT replaces the entire resource.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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