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Question 1

Score: 0/0

Which protocol does the Junos XML API use to transport RPC requests and responses?

REST over HTTP/HTTPS

NETCONF over SSH

SOAP over HTTPS

CLI over Telnet

to track

2026 Statistics

Key Facts: JNCIA-DevOps Exam

65 Q's

Exam Questions

Juniper Networks

90 min

Exam Duration

Juniper Networks

$200

Exam Fee

Juniper / Pearson VUE

3 years

Cert Valid

Juniper Networks

60-100 hrs

Study Time

Recommended

None

Prerequisites

Juniper Networks

JNCIA-DevOps is Juniper's associate-level DevOps and automation certification. The exam has 65 questions in 90 minutes covering PyEZ, NETCONF/ncclient, Junos XML API, Ansible (junipernetworks.junos collection), Jinja2, YAML, Git, CI/CD, op scripts, commit scripts, and event scripts. No prerequisites required. Certification is valid for 3 years.

Sample JNCIA-DevOps Practice Questions

Try these sample questions to test your JNCIA-DevOps exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1Which protocol does the Junos XML API use to transport RPC requests and responses?

A.REST over HTTP/HTTPS

B.NETCONF over SSH

C.SOAP over HTTPS

D.CLI over Telnet

Explanation: The Junos XML API uses NETCONF over SSH as its transport. NETCONF (RFC 6241) provides the framing and session management, while SSH provides secure transport. RPC requests are encoded as XML and carried within the NETCONF session.

2When retrieving Junos configuration via the XML API, which RPC call is used to get the entire configuration in XML format?

A.<get-software-information/>

B.<get-config/>

C.<get-interface-information/>

D.<load-configuration/>

Explanation: <get-config/> is the NETCONF RPC used to retrieve device configuration. In Junos, this returns the full configuration XML tree. <get-software-information/> retrieves OS version data, <get-interface-information/> retrieves interface state, and <load-configuration/> pushes a new configuration.

3Which Python library is the standard client for making NETCONF connections to Junos devices?

A.paramiko

B.ncclient

C.netmiko

D.requests

Explanation: ncclient is the standard Python library for NETCONF operations. It provides a high-level API for NETCONF sessions, including connect(), get_config(), edit_config(), and commit() methods. Junos devices support NETCONF over SSH, which ncclient uses natively.

4When establishing a NETCONF session with an ncclient manager.connect() call to a Junos device, which SSH port is used by default?

A.22

B.830

C.443

D.8080

Explanation: NETCONF over SSH uses port 830 by default (RFC 4742/RFC 6242). While Junos also supports NETCONF over the standard SSH port 22 with a subsystem request, the IANA-assigned port for NETCONF is 830. ncclient's manager.connect() defaults to port 830.

5In Junos PyEZ, which class is the primary object used to create a connection to a Junos device?

A.jnpr.junos.Router

B.jnpr.junos.Device

C.jnpr.junos.Connection

D.jnpr.junos.Host

Explanation: The jnpr.junos.Device class is the primary PyEZ object. You instantiate it with the host, username, and password parameters, then call .open() to establish the connection. All PyEZ operations (RPC calls, table/view queries, configuration changes) are performed through this Device object.

6In PyEZ, how do you invoke the 'get-interface-information' RPC on a connected Device object named 'dev'?

A.dev.cli('show interfaces')

B.dev.rpc.get_interface_information()

C.dev.rpc('get-interface-information')

D.dev.execute('<get-interface-information/>')

Explanation: PyEZ maps XML RPC names to Python method names by replacing hyphens with underscores. So 'get-interface-information' becomes dev.rpc.get_interface_information(). PyEZ automatically handles the NETCONF framing and returns a parsed lxml Element. This is the idiomatic PyEZ way to call RPCs.

7What does the 'dev.facts' dictionary contain in a PyEZ Device object after opening a connection?

A.The full device configuration in Python dict format

B.Device metadata such as hostname, model, Junos version, and serial number

C.A list of all available RPC methods

D.Interface statistics and counters

Explanation: dev.facts is a dictionary automatically populated when the Device connection is opened. It contains device metadata including hostname, model (e.g., 'MX480'), Junos version, serial number, uptime, and routing engine information. This data is collected via a series of RPC calls during the open() process.

8Which PyEZ utility class is used to manage Junos configuration changes, including loading and committing configuration?

A.jnpr.junos.utils.sw.SW

B.jnpr.junos.utils.config.Config

C.jnpr.junos.utils.fs.FS

D.jnpr.junos.utils.scp.SCP

Explanation: The jnpr.junos.utils.config.Config class provides methods for configuration management: load() to load configuration data, commit() to commit changes, rollback() to revert, and diff() to preview pending changes. It is instantiated with the Device object and handles all configuration workflow operations.

9In a Jinja2 template, which delimiter is used to output a variable value?

A.{% variable %}

B.{{ variable }}

C.{# variable #}

D.<< variable >>

Explanation: In Jinja2, double curly braces {{ }} are used to output (print) variable values. Single curly braces with percent signs {% %} are used for control flow statements (if, for, block). Hash signs {# #} are used for comments.

10You are building a Jinja2 template to generate Junos interface configuration. The template receives a list called 'interfaces'. Which Jinja2 construct iterates over this list?

A.{% foreach item in interfaces %}

B.{% for item in interfaces %}

C.{{ for item in interfaces }}

D.{% loop item in interfaces %}

Explanation: Jinja2 uses {% for item in list %} ... {% endfor %} for iteration, following Python-like syntax. The for loop block must be closed with {% endfor %}. This is identical to Python's for loop syntax but wrapped in the Jinja2 block delimiter.

About the JNCIA-DevOps Exam

JNCIA-DevOps validates associate-level knowledge of Junos automation and DevOps fundamentals including PyEZ, NETCONF, Ansible for Junos, Jinja2 templating, Git, CI/CD pipelines, and on-box scripting with op scripts, commit scripts, and event scripts.

Questions

65 scored questions

Time Limit

90 minutes

Passing Score

Pass/Fail

Exam Fee

$200 (Juniper Networks / Pearson VUE)

JNCIA-DevOps Exam Content Outline

25%

Junos Automation APIs

Junos XML API, NETCONF (ncclient), REST API, REST vs NETCONF vs CLI comparison

25%

PyEZ and Scripting

jnpr.junos Device class, RPC calls, facts, Config utility, Tables/Views, exception handling

20%

Ansible for Junos

junipernetworks.junos collection: junos_command, junos_config, junos_facts; inventory and playbook structure

15%

On-Box Scripting

Op scripts (SLAX and Python), commit scripts (warnings and transient changes), event scripts and event policies

15%

DevOps Foundations

Git (branching, commits, merge vs rebase), CI/CD pipeline concepts, Jinja2 templating, YAML basics, SaltStack basics

How to Pass the JNCIA-DevOps Exam

What You Need to Know

Passing score: Pass/Fail
Exam length: 65 questions
Time limit: 90 minutes
Exam fee: $200

Keys to Passing

Complete 500+ practice questions
Score 80%+ consistently before scheduling
Focus on highest-weighted sections
Use our AI tutor for tough concepts

JNCIA-DevOps Study Tips from Top Performers

1Set up a PyEZ lab with vJunos or vSRX — hands-on RPC calls and Config.load() are essential to understand

2Know all three delimiter types in Jinja2: {{ }} for output, {% %} for logic, {# #} for comments

3Memorize the PyEZ safe workflow: lock() → load() → diff() → commit() → unlock()

4Practice the Ansible junipernetworks.junos module trio: junos_command, junos_config, junos_facts

5Learn git rebase vs merge: rebase creates linear history, merge preserves branch topology

Frequently Asked Questions

What is the JNCIA-DevOps exam format?

JNCIA-DevOps has 65 multiple-choice and multi-select questions in 90 minutes. The exam is pass/fail — Juniper does not publish the exact passing score. It is delivered at Pearson VUE centers and via online proctoring.

Do I need any prerequisites for JNCIA-DevOps?

No formal prerequisites are required for JNCIA-DevOps. However, familiarity with Junos OS basics (JNCIA-Junos level knowledge), Python programming fundamentals, and Linux command line will significantly help your preparation.

What topics are covered on JNCIA-DevOps?

JNCIA-DevOps covers: Junos XML API and NETCONF (ncclient), PyEZ (Device class, RPC, facts, Config), Jinja2 templating, YAML basics, on-box scripting (op scripts in SLAX/Python, commit scripts, event scripts), Ansible for Junos (junipernetworks.junos collection), SaltStack basics, Git fundamentals (branching, merge vs rebase), CI/CD pipeline concepts, and Junos REST API.

How does JNCIA-DevOps compare to JNCIA-Junos?

JNCIA-Junos covers Junos OS fundamentals (routing, switching, CLI, protocols). JNCIA-DevOps is a separate track focused on automation and DevOps — Python scripting, API-based management, and CI/CD. They are complementary: JNCIA-Junos gives you the networking foundation, while JNCIA-DevOps gives you the automation skills.

How long should I study for JNCIA-DevOps?

Plan 60-100 hours of study over 6-10 weeks. Key areas: PyEZ hands-on lab practice (connect to a vJunos or physical device), Ansible playbook writing, and Git workflow practice. Set up a lab with vSRX or vJunos Evolved via Vagrant or GNS3.