JNCIA-DevOps Junos REST API Practice Question
When comparing the workflow and capabilities of the Junos REST API versus NETCONF, which THREE statements are correct? (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
✓
NETCONF requires explicit <lock> and <unlock> RPC workflows, whereas REST API abstracts transaction locking implicitly.
NETCONF uses SSH port 830 and XML RPCs with explicit candidate locking, whereas Junos REST API uses HTTP/HTTPS (port 3000/3443) and supports JSON and XML resource operations.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
NETCONF requires explicit <lock> and <unlock> RPC workflows, whereas REST API abstracts transaction locking implicitly.
Why this is correct
NETCONF requires manual lock management, while REST API handles resource locking internally.
- ✗
Junos REST API only supports JSON format, while NETCONF only supports binary streams.
Why it's wrong here
REST supports both JSON and XML, and NETCONF uses text-based XML, not binary streams.
- ✓
NETCONF operates over TCP port 830 using an SSH subsystem, while Junos REST API operates over HTTP/HTTPS ports.
Why this is correct
This correctly identifies the standard transport ports and mechanisms for both protocols.
- ✗
NETCONF does not support commit operations, whereas REST API automatically commits every keystroke.
Why it's wrong here
NETCONF explicitly relies on commit operations, and REST does not auto-commit every keystroke by default.
- ✓
Both protocols allow interaction with Junos configuration and operational databases.
Why this is correct
Both NETCONF and REST API provide pathways to manage configurations and query operational states.
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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.