JNCIA-DevOps Data Serialization Practice Question
You are writing a Python automation script that processes JSON output from a Junos device's 'show interfaces' operational command via PyEZ. One of the interface descriptions contains raw control characters. When the script attempts to dump this data to a JSON string using json.dumps(), it raises a ValueError. Which parameter should you pass to json.dumps() to handle non-printable or out-of-range character encoding gracefully?
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
✓
ensure_ascii=False
The json.dumps() function in Python includes an 'ensure_ascii' parameter. When set to False, it allows non-ASCII characters to be emitted directly without raising serialization errors or escaping them into Unicode escape sequences.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
skipkeys=True
Why it's wrong here
Incorrect. skipkeys is used to skip non-string keys in dictionaries rather than handling values.
- ✗
check_circular=False
Why it's wrong here
Incorrect. check_circular disables circular reference detection for container objects.
- ✓
ensure_ascii=False
Why this is correct
Correct. ensure_ascii=False ensures that non-ASCII or special characters are serialized without crashing the encoder.
- ✗
allow_nan=True
Why it's wrong here
Incorrect. allow_nan handles JavaScript float values such as NaN, Infinity, and -Infinilty.
About these practice questions
One of 306 original JNCIA-DevOps practice questions on Courseiva, each with a full explanation and wrong-answer analysis — not exam dumps or protected exam content. 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.