JNCIA-DevOps Data Serialization Practice Question
An automation script reads a configuration template where boolean values are represented as 'yes' and 'no' in YAML. When parsed using PyYAML in Python, how are these values interpreted?
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
✓
They are interpreted as Python boolean True and False values.
In YAML 1.1 (which PyYAML predominantly implements), unquoted words like 'yes', 'no', 'true', 'false', 'on', and 'off' are automatically parsed into native boolean values.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
They are converted to integer 1 and 0 values.
Why it's wrong here
Incorrect. They are resolved as booleans, not integers.
- ✓
They are interpreted as Python boolean True and False values.
Why this is correct
Correct. PyYAML automatically converts 'yes' and 'no' into native boolean types.
- ✗
They remain as literal string objects ('yes' and 'no').
Why it's wrong here
Incorrect. Without quotes, PyYAML resolves them as booleans.
- ✗
The parser raises a ConstructorError because only 'true' and 'false' are valid.
Why it's wrong here
Incorrect. YAML specification supports multiple string representations for booleans.
About these practice questions
This JNCIA-DevOps question is part of Courseiva's 307-question bank — original exam-style content with full explanations and wrong-answer analysis, never real exam questions or exam dumps. Learn why practice questions differ from exam dumps →
JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed August 2026 · checked against the official Juniper Networks exam blueprint
This JNCIA-DevOps practice question is part of Courseiva's free Juniper Networks 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 JNCIA-DevOps exam.