Juniper® JNCIA Certification Exam Cram Notes

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The Juniper Networks Certified Associate - Junos (JNCIA-Junos) is the entry-level credential required before candidate can proceed with advanced Junos certification. Candidates will have knowledge of the Juniper Networks Junos OS, networking fundamentals, and basic routing and switching after this certification.


1. Networking Fundamentals

1.1 Collision domains and broadcast domains

1.2 Function of routers and switches

1.3 Optical network fundamentals - SONET/SDH, OTN

1.4 Ethernet Networks

1.5 Layer2 addressing and address resolution

1.6 IPv4 and IPv6 Fundamentals

1.7 Binary Numbers to Decimal Number Conversion and Vice Versa

1.8 Longest match routing

1.9 Connection Oriented and Connectionless protocols

2. Junos OS Fundamentals

2.1 Junos Device portfolio

2.2 Software Architecture

2.3 Routing Engine and Packet Forwarding Engine 

2.4 Protocol daemons

3. User Interfaces

3.1 Concepts, operation and functionality of the Junos user interfaces

3.2 Active vs. candidate configuration

3.3 Reverting to Previous configurations

3.4 Modifying, managing, and saving configuration files

3.5 J-Web – core/common functionality

4. Junos Configuration Basics

4.1 Factory Default state

4.2 User authentication methods

4.3 Initial Configuration

4.4 Interface Types and Properties

4.5 Describe how to configure basic components of a Junos device

5. Operational Monitoring and Maintenance

5.1 Show commands

5.2 Monitor commands

5.3 Network tools

5.4 Root password recovery

6. Routing Fundamentals

6.1 Routing Table

6.2 Static Routing

6.3 Routing Protocols

7. Routing Policy and Firewall Filters

7.1 Default Routing Policies

7.2 Firewall Filter Concepts ad


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