Juniper Junos Associate (JNCIA-Junos JN0-104) Practice Exam

Juniper Junos Associate (JNCIA-Junos JN0-104) Practice Exam

The Juniper Networks Certified Associate - Junos (JNCIA-Junos JN0-104) certification validates your understanding of the fundamentals of the Junos operating system, used to manage and configure Juniper network devices. This entry-level certification is the foundation for several other Juniper certification tracks, making it a valuable starting point for individuals seeking to build a career in networking, particularly those interested in working with Juniper technologies.

Who should take the JNCIA-Junos Exam?

This exam is ideal for:

• Network administrators with beginner to intermediate network knowledge: Familiarity with networking concepts like IP addressing, routing protocols, and basic network security principles is beneficial.
• Individuals new to Juniper networks: This exam provides a solid foundation for understanding and working with Junos devices.
• Professionals seeking to advance their careers in networking: Earning the JNCIA-Junos demonstrates your commitment to professional development and opens doors to further Juniper certifications.

Prerequisites:

There are no formal prerequisites for taking the JNCIA-Junos exam. However, having a basic understanding of networking concepts and an interest in working with Juniper technologies is recommended.

Roles and Responsibilities:

While specific roles may vary, individuals with the JNCIA-Junos certification can find themselves contributing to various tasks associated with managing and configuring Juniper network devices, such as:

• Junior Network Administrators: Assisting with basic network configuration tasks, troubleshooting minor network issues, and monitoring network performance using Junos commands.
• Help Desk Technicians: Providing initial support for network-related issues, performing basic configuration changes, and escalating complex problems to senior network administrators.
• Network Operations Center (NOC) Technicians: Monitoring network activity, identifying and resolving network incidents, and adhering to established procedures for managing Juniper network devices.

Exam Details:

• Exam Provider: Juniper Networks
• Format: Computer-based exam with multiple-choice and drag-and-drop questions
• Number of Questions: Typically around 65 questions
• Duration: 90 minutes
• Passing Score: 65%

Course Outline

The exam covers the following topics - 

Domain 1 - Understanding Networking Fundamentals

Learn the concepts and functionality of fundamental elements of networking including - 

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

Domain 2 - Understanding Junos OS Fundamentals

Learn and describe the concepts, benefits or functionality of the core elements of the Junos OS including - 

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

Domain 3 - Understanding User Interfaces

Learn and describe the concepts, operation or functionality of the Junos OS user interface incuding - 

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

Domain 4 - Understanding Configuration Basics

Learn and describe the primary elements for configuring Junos devices

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

Domain 5 - Understanding concept of Operational Monitoring and Maintenance

Learn and describe the methods of monitoring or maintaining Junos devices including - 

• Explaining Show commands
• Explaining Monitor commands
• Explaining Interface statistics and errors
• Explaining Network tools, such as ping, traceroute, telnet, SSH, and so on
• Explaining Junos OS installation and upgrades
• Explaining Powering on and shutting down Junos devices
• Explaining Root password recovery
• Explaining monitoring or maintenance procedures for a Junos device

Domain 6 - Understanding Routing Fundamentals

Learn and describe the basic routing concepts or functionality for Junos devices including - 

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

Domain 7 - Understanding Routing Policy and Firewall Filters

Learn and describe the concepts or functionality of routing policy and firewall filters on Junos devices including - 

• Explaining Default routing policies
• Explaining Import and export policies
• Explaining Routing policy flow
• Explaining the Effect of policies on routes and routing tables
• Explaining Policy structure and terms
• Explaining Policy match criteria, match types, and actions
• Explaining Firewall filter concepts
• Explaining Filter structure and terms
• Explaining Filter match criteria and actions
• Explaining the Effect of filters on packets
• Explaining Unicast reverse-path-forwarding (RPF)
• Explaining to configure or monitor routing policies and firewall filters on a Junos device