Changes to the Juniper Networks Certified Associate JNCIA-Junos Exam

Changes to the Juniper Networks Certified Associate JNCIA-Junos Exam 1200 628 CyberVista now N2K

Written by Troy McMillan

When technology changes significantly, tools are upgraded, and the associated certifications needed to demonstrate proficiency in the new tasks are realigned. Juniper updated the Juniper Junos Associate JN0-105 (JNCIA-Junos) exam in January of this year. We just released our N2k Practice test for this exam!

The JNCIA-Junos certification validates an understanding of the core functionality of the Junos OS. It assumes an audience of networking professionals with beginner-intermediate knowledge of networking. 

This certification can be the start of a long-term journey to achieve more advanced Juniper certifications. As it requires a core understanding of the Juniper Networks core operating system, it serves as the baseline certification for multiple certification tracks:

What is tested in JN0-105 exam?  

Here are the objectives :

Networking Fundamentals

Identify the concepts and functionality of various fundamental elements of networking

  • Collision domains and broadcast domains
  • Function of routers and switches
  • Ethernet networks
  • Layer 2 addressing, including address resolution
  • Layer 3 / IP addressing including subnet masks
  • IPv4 / IPv6
  • Subnetting and supernetting
  • Decimal to binary conversion
  • Longest match routing
  • CoS
  • Connection-oriented vs. connectionless protocols

Junos OS Fundamentals

Identify the concepts, benefits, or functionality of the core elements of the Junos OS

  • Software architecture
  • Control and forwarding planes
  • Routing Engine and Packet Forwarding Engine
  • Transit traffic processing
  • Exception traffic

User Interfaces

Identify the concepts, operation, or functionality of the Junos OS user interface

  • CLI functionality
  • CLI modes
  • CLI navigation
  • CLI Help
  • Filtering output
  • Active versus candidate configuration
  • Reverting to previous configurations
  • Modifying, managing, and saving configuration files
  • Viewing, comparing, and loading configuration files
  • J-Web (core/common functionality only)

Configuration Basics

Identify the main elements for configuring Junos devices

  • Factory-default state
  • Initial configuration
  • User accounts
  • Login classes
  • User authentication methods
  • Interface types and properties
  • Configuration groups
  • Additional initial configuration elements, such as NTP, SNMP, and syslog
  • Configuration archival
  • Logging and tracing
  • Rescue configuration
  • Describe how to configure basic components of a Junos device

Operational Monitoring and Maintenance

Identify methods of monitoring or maintaining Junos devices

  • Show commands
  • Monitor commands
  • Interface statistics and errors
  • Network tools, such as ping, traceroute, telnet, SSH, and so on
  • Junos OS installation and upgrades
  • Powering on and shutting down Junos devices
  • Root password recovery

Describe monitoring or maintenance procedures for a Junos device

Routing Fundamentals

Identify basic routing concepts or functionality for Junos devices

  • Traffic forwarding concepts
  • Routing tables
  • Routing versus forwarding tables
  • Route preference
  • Routing instances
  • Static routing
  • Advantages of and use cases for dynamic routing protocols
  • Describe how to configure or monitor basic routing elements for a Junos device

Routing Policy and Firewall Filters

Identify the concepts or functionality of routing policy and firewall filters on Junos devices

  • Default routing policies
  • Import and export policies
  • Routing policy flow
  • Effect of policies on routes and routing tables
  • Policy structure and terms
  • Policy match criteria, match types, and actions
  • Firewall filter concepts
  • Filter structure and terms
  • Filter match criteria and actions
  • Effect of filters on packets
  • Unicast reverse-path-forwarding (RPF)

Describe how to configure or monitor routing policies and firewall filters on a Junos device


What can I use to study?

Recommended Training:

Exam Resources:

N2K Practice Test for Juniper Networks Certified Associate JCNIA-JUNOS (JN0-105)


Exam Details

Exam questions are derived from the recommended training and the exam resources listed above. Pass/fail status is available immediately after taking the exam. The exam is only provided in English.

  • Exam Code: JN0-105
  • Prerequisite Certification: None
  • Delivered by: Pearson VUE
  • Exam Length: 90 minutes
  • Exam Type: 65 multiple-choice questions
  • Software Versions: Junos OS 21.2