Junos, Associate (JNCIA-Junos)- JN0-105

The JNCIA-Junos certification is designed for networking professionals with beginner-intermediate knowledge of networking. The written exam verifies your understanding of the core functionality of the Juniper Networks Junos OS.

Exam Objectives

1. 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

2. Junos OS Fundamentals

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

• Software architecture

• Control and forwarding planes

• Routing engine and packet-forwarding engine

• Transit traffic processing

• Exception traffic

3. User Interfaces

Identify the concepts, operation, or functionality of the Junos user interface, including:

• CLI functionality

• CLI modes

• CLI navigation

• CLI Help

• Filtering output

• Active vs. candidate configuration

• Reverting to previous configurations

• Modifying, managing, and saving configuration files

• Viewing, comparing, and loading configuration files

• J-Web (core/common functionality only)

4. Configuration Basics

Identify the main elements for configuring Junos devices, including:

• Factory-default state 

• Initial configuration

• User accounts

• Login classes

• User authentication methods

• Interface types and properties

• Configuration groups

• Additional initial configuration elements, such as Network Time Protocol (NTP), SNMP, system log

• Configuration archival

• Logging and tracing

• Rescue configuration

 Describe how to configure basic components of a Junos device

5. Operational Monitoring and Maintenance

Identify methods of monitoring or maintaining Junos devices, including:

• Show commands

• Monitor commands

• Interface statistics and errors

• Network tools, such as ping, traceroute, telnet, SSH, etc.

• Junos OS installation and upgrades

• Powering on and shutting down Junos devices

• Root password recovery

Describe monitoring or maintenance procedures for a Junos device

6. Routing Fundamentals

Identify basic routing concepts or functionality for Junos devices, including:

• Traffic forwarding concepts

• Routing tables

• Routing vs. 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

7. 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

Exam Details

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

• Exam Code- JN0-105
• Exam Type- 65 multiple-choice question
• Prerequisite Certification- None