JNCIA-DevOps Data Serialization Practice Question
When parsing a Junos configuration snippet in YAML, an engineer notices a string value starting with a zero (e.g., '01234') that is unquoted. How do YAML parsers typically interpret this value?
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
✓
As an octal integer.
In YAML 1.1, numbers starting with a leading zero are interpreted as octal (base 8) integers. To ensure it is treated as a string, it must be quoted.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
The parser throws a ScannerError due to invalid numeric formatting.
Why it's wrong here
Incorrect. Octal representation with leading zero is valid in YAML 1.1.
- ✗
As a string literal matching the exact characters.
Why it's wrong here
Incorrect. Unquoted numbers are parsed as numeric types, not strings.
- ✗
As a floating-point number with zero prefix.
Why it's wrong here
Incorrect. Floats require a decimal point or exponential notation.
- ✓
As an octal integer.
Why this is correct
Correct. Leading zeros in YAML 1.1 trigger octal integer interpretation.
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.