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JNCIP-ENT Exam Objectives (Exam: JN0-643 and JN0-646)

This list provides a general view of the skill set required to successfully complete the specified certification exam.

OSPF
BGP
IP Multicast
Ethernet Switching and Spanning Tree
Layer 2 Authentication and Access Control
IP Telephony Features
Class of Service (CoS)

OSPF

  • Describe the concepts, operation and functionality of OSPFv2 and OSPFv3
    • OSPF LSA types
    • OSPF area types and operations
    • LSA flooding through an OSPF multi-area network
    • DR/BDR operation
    • SPF algorithm
    • Metrics, including external metric types
    • Authentication options
    • Route summarization and restriction
    • Overload
    • Virtual links
    • OSPFv2 vs OSPFv3
  • Given a scenario, demonstrate knowledge of how to configure and monitor single-area and multi-area OSPF
    • Implement OSPF routing policy

BGP

  • Describe the concepts, operation and functionality of BGP
    • BGP route selection process
    • Next hop resolution
    • BGP attributes - concept and operation
    • BGP communities
    • Regular expressions
    • Load balancing - multipath, multihop, forwarding table
    • NLRI families - inet, inet6
    • Advanced BGP options
  • Given a scenario, demonstrate knowledge of how to configure and monitor BGP
    • Implement BGP routing policy

IP Multicast

  • Describe the concepts, operation and functionality of IP multicast
    • Components of IP multicast, including multicast addressing
    • IP multicast traffic flow
    • Any-Source Multicast (ASM) vs. Source-Specific Multicast (SSM)
    • RPF - concept and operation
    • IGMP, IGMP snooping
    • PIM dense-mode and sparse-mode
    • Rendezvous point (RP) - concept, operation, discovery, election
    • SSM - requirements, benefits, address ranges
    • Anycast RP
    • MSDP
    • Routing policy and scoping
  • Given a scenario, demonstrate knowledge of how to configure and monitor IGMP, PIM-DM and PIM-SM (including SSM)
    • Implement IP multicast routing policy

Ethernet Switching and Spanning Tree

  • Describe the concepts, operation and functionality of advanced Ethernet switching
    • Filter-based VLANs
    • Private VLANs
    • Dynamic VLAN registration using MVRP
    • Tunnel Layer 2 traffic through Ethernet networks
    • Layer 2 tunneling using Q-in-Q and L2PT
  • Given a scenario, demonstrate knowledge of how to configure and monitor advanced Ethernet switching
    • Filter-based VLANs
    • Private VLANs
    • Dynamic VLAN registration using MVRP
    • Tunnel Layer 2 traffic through Ethernet networks
    • Layer 2 tunneling using Q-in-Q and L2PT
  • Describe the concepts, operation and functionality of advanced spanning tree protocols, including MSTP and VSTP
  • Given a scenario, demonstrate knowledge of how to configure and monitor MSTP and VSTP

Layer 2 Authentication and Access Control

  • Describe the operation of various Layer 2 authentication and access control features
    • Authentication process flow
    • 802.1x - concepts and functionality
    • MAC RADIUS
    • Captive portal
    • Server fail fallback
    • Guest VLAN
    • Considerations when using multiple authentication/access control methods
  • Given a scenario, demonstration how to configure and monitor Layer 2 authentication and access control

IP Telephony Features

  • Describe the concepts, operation and functionality of features that facilitate IP telephony deployments
    • Power over Ethernet (PoE)
    • LLDP and LLDP-MED
    • Voice VLAN
  • Given a scenario, demonstrated how to configure and monitor features used to support IP Telephony

Class of Service (CoS)

  • Describe the concepts, operation and functionality of Junos CoS for Layer 2/3 networks
    • CoS processing on Junos devices
    • CoS header fields
    • Forwarding classes
    • Classification
    • Packet loss priority
    • Policers
    • Schedulers
    • Drop profiles
    • Shaping
    • Rewrite rules
  • Given a scenario, demonstrate knowledge of how to configure and monitor CoS for Layer 2/3 networks