JNCIA-DevOps NETCONF And XML API Practice Question
An engineer needs to establish a NETCONF session with a Junos device securely. Which underlying transport protocol does NETCONF use by default according to RFC 6242?
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
✓
TCP port 830
NETCONF over SSH is defined in RFC 6242 and uses TCP port 830 by default for secure transport.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
TCP port 22
Why it's wrong here
Port 22 is typically used for standard CLI SSH sessions, not NETCONF by default.
- ✗
TCP port 443
Why it's wrong here
Port 443 is used for HTTPS/TLS traffic, such as the Junos REST API.
- ✗
UDP port 830
Why it's wrong here
NETCONF relies on connection-oriented reliable transport via TCP.
- ✓
TCP port 830
Why this is correct
RFC 6242 specifies TCP port 830 as the standard port for NETCONF over SSH.
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.