JNCIA-DevOps Data Serialization Practice Question
During script development, an engineer encounters a YAML file containing comments and multiple configuration documents separated by document markers. Which characters are used to denote the start of a new document within a single YAML file stream?
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
✓
---
In YAML, three dashes (---) indicate the start of a document, while three dots (...) indicate the end of a document.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
===
Why it's wrong here
Equal signs are not used as standard document delimiters in YAML syntax.
- ✓
---
Why this is correct
Three hyphens denote the document start marker in multi-document YAML files.
- ✗
...
Why it's wrong here
Three dots denote the document end marker, not the start marker.
- ✗
###
Why it's wrong here
Hashes are used for single-line comments in YAML, not document markers.
About these practice questions
Courseiva writes every JNCIA-DevOps question from scratch — 306 in total, each with an explanation and a wrong-answer breakdown. None are copied from real exams or 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.