JNCIA-Junos certification
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
Here’s a high-level view of the skillset required to successfully complete the JNCIA-Junos certification exam.
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
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
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
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)
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
- JN0-104
Prerequisite Certification
- None
Delivered by
- Pearson VUE
Exam Length
- 90 minutes
Exam Type
- 65 multiple-choice questions
Software Versions
- Junos OS 21.2