200-901 Cisco Platforms and Development Practice Question
A developer wants to create a new room in Cisco Webex using the API. Which HTTP request is appropriate?
⚠ Common exam trap
200-901 often tests HTTP verb semantics — candidates may pick PUT thinking it 'creates', but POST is required for collection-level creation.
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
✓
POST /v1/rooms
Creating a new Webex room is a resource-creation operation, which maps to HTTP POST against the /v1/rooms collection. POST /v1/rooms with a JSON body containing the title creates the room and returns its details. This follows standard REST semantics.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
GET /v1/rooms
Why it's wrong here
GET retrieves a list of existing rooms; it creates nothing. POST /v1/rooms is the create operation, returning 201 with the new room. GET is tempting because listing rooms is the common first API call when exploring the Webex REST interface, but it cannot satisfy a creation requirement.
- ✗
PUT /v1/rooms
Why it's wrong here
PUT replaces or updates an existing resource at a known URI; it cannot create a room, since no room ID exists yet. POST /v1/rooms is the create operation. PUT is tempting because it is idempotent and used for full updates, which is correct when modifying an existing room's title.
- ✓
POST /v1/rooms
Why this is correct
Creating a room is a resource-creation action on the rooms collection, so the Webex REST API expects POST to /v1/rooms with the room title in the JSON body. GET retrieves, PUT updates, and DELETE removes; only POST creates a new room.
- ✗
DELETE /v1/rooms
Why it's wrong here
DELETE removes an existing room identified by its room ID; it creates nothing and would fail without a valid ID. POST /v1/rooms is the create operation. DELETE is tempting because room lifecycle management via the Webex API includes cleanup, which is correct when decommissioning a room.
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Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed September 2026 · checked against the official Cisco exam blueprint
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