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200-901 Practice Question: Which three of the following are common data…
Which three of the following are common data formats used with REST APIs on Cisco platforms?
⚠ Common exam trap
Cisco often tests that candidates recognize JSON, XML, and YAML as common data formats for REST APIs, but the trap here is that YAML is less common for REST API payloads and more associated with configuration management tools like Ansible, leading some to incorrectly exclude it while including CSV or HTML.
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
✓
JSON
JSON (JavaScript Object Notation) is a lightweight, text-based data interchange format that is natively supported by most programming languages and REST APIs. Cisco platforms, such as Cisco DNA Center and Cisco Meraki, use JSON as the primary data format for API requests and responses because it is easy to parse and has a compact structure. JSON's key-value pair syntax aligns well with RESTful principles, making it the most common choice for modern Cisco REST APIs.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
CSV
Why it's wrong here
CSV is not typical for REST APIs.
- ✓
JSON
Why this is correct
JSON is widely used for REST APIs.
- ✓
XML
Why this is correct
XML is common in NETCONF and RESTCONF.
- ✗
HTML
Why it's wrong here
HTML is for web pages, not API data exchange.
- ✓
YAML
Why this is correct
YAML is used in Ansible and some YANG-based APIs.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This 200-901 practice question is part of Courseiva's free Cisco certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the 200-901 exam.