JNCIA-DevOps Junos REST API Practice Question
An automation engineer is trying to retrieve operational data from a Junos device using the REST API. They send an HTTP GET request to the URI path 'http://192.168.1.1:3000/api/font/operational/system/information', but the request fails with a 404 Not Found error. What is the cause of this failure?
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
✓
The URI path contains an invalid prefix segment 'font' instead of the required API root structure.
The correct base path for Junos REST API operational data uses 'rpc' or 'initial' or specific resource endpoints like /api/restful/rit/rpc, but the standard path prefix for RPCs and operational data via the Junos REST API begins with /api/operational/ rather than /api/font/operational/.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Authentication credentials were missing from the HTTP header.
Why it's wrong here
Missing authentication typically yields a 401 Unauthorized status, not a 404 Not Found.
- ✓
The URI path contains an invalid prefix segment 'font' instead of the required API root structure.
Why this is correct
The correct operational API route uses '/api/operational/system/information', and 'font' is an incorrect path segment.
- ✗
The port 3000 is reserved for NETCONF and cannot be used for REST API requests.
Why it's wrong here
Port 3000 is the default port used by the Junos REST API daemon (jpagent).
- ✗
Operational data retrieval requires an HTTP POST method instead of GET.
Why it's wrong here
Operational data can be retrieved using HTTP GET requests in the Junos REST API.
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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.