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Networking Fundamentals
Identify the concepts and functionality of various fundamental elements of networking
Collision domains and broadcast domains
Function of routers and switches
Optical network fundamentals – SONET/SDH, OTN
Ethernet networks
Layer 2 addressing, including address resolution
IPv4 and IPv6 fundamentals
Layer 3 / IP addressing, including subnet masks
Subnetting and supernetting
Decimal to binary conversion
Longest match routing
Connection-oriented vs. connectionless protocols

Junos OS Fundamentals
Identify the concepts, benefits and functionality of the core elements of the Junos OS
Junos device portfolio – product families, general functionality
Software architecture
Control and forwarding planes
Routing Engine and Packet Forwarding Engine
Protocol daemons
Transit traffic processing
Exception traffic

User Interfaces
Identify the concepts, operation and functionality of the Junos user interfaces
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

Junos 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 – NTP, SNMP, syslog, etc.
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 and maintaining Junos devices
Show commands
Monitor commands
Interface statistics and errors
Network tools – ping, traceroute, telnet, SSH, etc.
Real-time performance monitoring (RPM)
Junos OS installation
Software upgrades
Powering on and shutting down Junos devices
Root password recovery
Describe monitoring and maintenance procedures for a Junos device

Routing Fundamentals
Identify basic routing concepts and functionality for Junos devices
Packet forwarding concepts
Routing tables
Routing vs. forwarding tables
Route preference
Routing instances
Static routing
Advantages of / use cases for dynamic routing protocols
Describe how to configure and monitor basic routing elements for a Junos device

Routing Policy and Firewall Filters
Identify the concepts and 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
Firewall filter concepts
Filter match criteria and actions
Effect of filters on packets
Unicast reverse-path-forwarding (RPF)
Describe how to configure and monitor routing policies and firewall filters on a Junos device

JN0-102 Junos, Associate (JNCIA-Junos) - Practice Test
This practice test is designed to help prepare you for the JN0-102 Junos, Associate (JNCIA-Junos) certification exam. This practice test will allow you to assess your understanding of the topics covered in the JN0-102 exam and identify topics on which you may need further training.

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