Juniper JNCIA-Junos (JN0-105) Practice Exam
JNCIA-JUNOS
Entry-level Juniper certification covering networking fundamentals, Junos OS basics, and routing concepts.
Exam Details
Official JNCIA-JUNOS exam format
Exam Domains
The Juniper JNCIA-Junos (JN0-105) exam covers 7 domains with different weight percentages
Domain 1: Networking Fundamentals
15%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
Domain 2: Junos OS Fundamentals
15%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
Domain 3: User Interfaces
10%Identify the concepts, operation, or functionality of the Junos user interface.
- 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)
Domain 4: Configuration Basics
15%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
- Configuration archival
- Logging and tracing
- Rescue configuration
Domain 5: Operational Monitoring and Maintenance
15%Identify methods of monitoring or maintaining Junos devices.
- Show commands
- Monitor commands
- Interface statistics and errors
- Network tools
- Junos OS installation and upgrades
- Powering on and shutting down Junos devices
- Root password recovery
Domain 6: Routing Fundamentals
15%Identify basic routing concepts or functionality for Junos devices.
- Traffic forwarding concepts
- Routing tables
- Routing vs. forwarding tables
- Route preference
- Routing instances
- Static routing
- Dynamic routing protocols
Domain 7: Routing Policy and Firewall Filters
15%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)
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