JNCIA-DevOps NETCONF And XML API Practice Question
Which THREE error-tag values defined in NETCONF RFC 6241 may be returned by a Junos device when an edit-config operation fails validation? (Choose three)
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
✓
invalid-value
RFC 6241 error-tags include invalid-value, missing-element, data-exists, and in-use.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
syntax-timeout
Why it's wrong here
'syntax-timeout' is not a standard NETCONF error-tag.
- ✓
invalid-value
Why this is correct
'invalid-value' is returned when a configuration value is out of range or malformed.
- ✓
data-exists
Why this is correct
'data-exists' is returned when trying to create something that already exists.
- ✗
buffer-overflow
Why it's wrong here
'buffer-overflow' is not a standard NETCONF error-tag.
- ✓
missing-element
Why this is correct
'missing-element' is returned when a required parent or mandatory child is absent.
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.