How should I use these Junos REST API practice questions?

Read each scenario carefully and choose your answer before revealing the explanation. Then check why your choice was right or wrong. Repeat until the reasoning feels automatic.

Can I practise just Junos REST API questions in a focused session?

Yes — use the session launcher on this page to start a 10-, 20-, 30- or 50-question session drawn entirely from the Junos REST API domain.

JNCIA-DevOps · topic practice

Junos REST API practice questions

This domain covers the Junos REST API on Junos devices: enabling the REST service with the 'set system services rest' hierarchy, authenticating requests, choosing JSON or XML payloads, and issuing HTTP GET, POST, PUT, and DELETE calls against RPCs and configuration endpoints. Questions test headers, authentication handling, and safe configuration workflows.

Courseiva uses original exam-style practice questions designed for learning and revision. The goal is to understand the concepts, recognise exam patterns, and improve through explanations — not memorise copied exam dumps.

Editorial oversight:Johnson Ajibi· MSc IT Security, IEEE Senior Member

20 questionsDomain: Junos REST API

Practice 10 questions Browse domain →

What the exam tests

What to know about Junos REST API

Be able to enable the Junos REST API, authenticate with HTTP Basic Auth, set Accept and Content-Type headers for JSON or XML, and issue GET, POST, PUT, and DELETE requests to retrieve operational data and manage configuration safely.

Enabling the Junos REST API via 'set system services rest http' or 'https' and verifying reachability

Using HTTP Basic Authentication with valid Junos user credentials for REST requests

Setting Accept and Content-Type headers to application/json or application/xml for payloads

Retrieving operational data with GET RPCs and configuration with /rpc/get-configuration or config endpoints

Watch out for

Common Junos REST API exam traps

▸Sending requests without the correct Accept header, so Junos returns XML instead of the expected JSON payload
▸Assuming a 401 means bad credentials when the REST service or user permissions are actually misconfigured
▸Using HTTP methods incorrectly, such as POST when GET is required for read-only operational RPCs

Practice set

Junos REST API questions

20 questions · select your answer, then reveal the explanation

Question 1easymultiple choice

Read the full Junos REST API explanation →

An administrator wishes to secure their Junos REST API connections by configuring HTTPS instead of plain HTTP. Which command under 'system services jpagent' accomplishes this?

Trap 1: set system services netconf ssl

This configures secure NETCONF over SSH, not the REST API.

Trap 2: set security ipsec-vpn

IPsec VPN is unrelated to REST API transport security.

Trap 3: set system services rest secure

This is not a valid Junos CLI syntax path.

Junos REST API practice questions

What to know about Junos REST API

Common Junos REST API exam traps

Junos REST API questions

An administrator wishes to secure their Junos REST API connections by configuring HTTPS instead of plain HTTP. Which command under 'system services jpagent' accomplishes this?

Which service daemon must be explicitly enabled in the Junos CLI configuration to allow REST API requests to be processed by the routing engine?

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?

When comparing NETCONF and the Junos REST API workflows, which statement accurately describes how configuration locks are handled?

How does the Junos REST API handle configuration commits compared to NETCONF workflow behavior?

An automation engineer needs to check if the Junos REST API is actively running and responsive on a managed device without querying heavy configuration data. Which lightweight endpoint can be queried?

An administrator wants to retrieve the configuration of a specific interface (e.g., ge-0/0/0) using the Junos REST API. Which URI structure is appropriate for fetching this configuration resource in JSON format?

When configuring the Junos REST API, an administrator restricts access to a specific port and enables SSL. Which configuration statement sets the secure HTTPS port to 8443?

What is the default TCP port used by the Junos jpagent for unencrypted HTTP REST API connections?

An administrator wants to disable the Junos REST API daemon entirely. Which CLI command achieves this?

When sending an HTTP POST request to create a new configuration resource via the Junos REST API, what happens if the resource already exists in the candidate configuration?

When comparing the workflow and capabilities of the Junos REST API versus NETCONF, which THREE statements are correct? (Choose three)

Which TWO configuration steps are required to enable the Junos REST API with basic security settings? (Choose two)

When troubleshooting Junos REST API integration issues, which THREE factors should an engineer examine if API requests return connection timeouts or refused errors? (Choose three)

An engineer is designing an automated failover script that needs to discard candidate configuration changes made via the Junos REST API. How should this discard action be performed?

Which Junos configuration command enables the REST API daemon to start automatically upon device boot?

When configuring advanced options for the Junos REST API jpagent, which THREE parameters or sub-statements can be configured under the 'set system services jpagent' hierarchy? (Choose three)

An automation engineer needs to enable and configure the Junos REST API service on an SRX Series device using the CLI. Which configuration hierarchy must be used to enable the service and configure its transport protocol?

An administrator wants to fetch operational data representing interface statistics using the Junos REST API by issuing an HTTP GET request. Which URI structure correctly targets the 'get-interface-information' RPC via the REST API endpoint?

Track your progress over time

Start a Junos REST API only practice session

Related JNCIA-DevOps topic practice pages

NETCONF And XML API practice questions

Python And PyEZ practice questions

Junos Automation Stack And DevOps Concepts practice questions

Data Serialization practice questions

Junos REST API practice questions

JNCIA-DevOps fundamentals practice questions

JNCIA-DevOps scenario practice questions

JNCIA-DevOps troubleshooting practice questions

Frequently asked questions

Track your progress

Study resources

Exam traps to avoid