JNCIA-DevOps Data Serialization Practice Question
An automation script reads a multi-document YAML file containing configuration templates for various Junos router models. To process each document individually in Python using PyYAML, which function should the engineer invoke?
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
✓
yaml.safe_load_all()
yaml.safe_load_all() is designed to parse a stream containing multiple YAML documents separated by '---', returning a generator that yields each parsed document sequentially.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
yaml.read_multi()
Why it's wrong here
Incorrect. read_multi does not exist in PyYAML.
- ✗
yaml.load_all()
Why it's wrong here
Incorrect. yaml.load_all() without 'safe_' uses the full loader, which can be vulnerable to arbitrary code execution if parsing untrusted data.
- ✓
yaml.safe_load_all()
Why this is correct
Correct. yaml.safe_load_all() safely parses a multi-document YAML stream into an iterator of Python objects.
- ✗
yaml.parse_documents()
Why it's wrong here
Incorrect. parse_documents is not a standard function in the PyYAML library.
About these practice questions
This JNCIA-DevOps question is part of Courseiva's 306-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.