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200-901 Practice Question: Which THREE of the following are valid JSON data…
Which THREE of the following are valid JSON data types? (Choose three.)
⚠ Common exam trap
Cisco often tests the misconception that JSON supports JavaScript-specific types like Function or Date, but JSON is a language-independent format with only six defined types per RFC 7159.
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
✓
String
JSON (JavaScript Object Notation) is a lightweight data-interchange format that supports only a fixed set of data types as defined by RFC 7159. String is a valid JSON type because it must be enclosed in double quotes and can contain Unicode characters. Number is valid as it includes integers and floating-point values without quotes, following the numeric grammar in the JSON specification.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
String
Why this is correct
Strings are enclosed in double quotes.
- ✓
Number
Why this is correct
Numbers can be integer or floating point.
- ✗
Function
Why it's wrong here
Functions are not a JSON type.
- ✓
Array
Why this is correct
Arrays are ordered lists of values in JSON.
- ✗
Date
Why it's wrong here
Dates are represented as strings, not a distinct type.
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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.