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JNCIS-ENT Exam Objectives (Exam: JN0-347)

This list provides a general view of the skill set required to successfully complete the specified certification exam. Topics listed are subject to change.

Layer 2 Switching and VLANs
Spanning Tree
Layer 2 Security
Protocol-Independent Routing
OSPF
IS-IS
BGP
Tunnels
High Availability

Layer 2 Switching and VLANs

  • Identify the concepts, operation, or functionality of Layer 2 switching for the Junos OS
    • Bridging components
    • Frame processing
  • Describe the concepts, benefits, or functionality of VLANs
    • Ports
    • Tagging
    • Native VLANs and voice VLANs
    • Inter-VLAN routing
  • Demonstrate knowledge how to configure, monitor or troubleshoot Layer 2 switching or VLANs
    • Interfaces and ports
    • VLANs
    • Junos Network Director
    • Inter-VLAN Routing

Spanning Tree

  • Describe the concepts, benefits, operation, or functionality of the Spanning Tree Protocol
    • STP and RSTP concepts
    • Port roles and states
    • BPDUs
    • Convergence and reconvergence
  • Demonstrate knowledge how to configure, monitor, or troubleshoot STP and RSTP
    • STP
    • RSTP

Layer 2 Security

  • Identify the concepts, benefits or operation of various Layer 2 protection or security features
    • BPDU, loop or root protection
    • Port security, including MAC limiting, DHCP snooping, Dynamic ARP inspection (DAI) or IP source guard
    • MACsec
    • Storm control
  • Identify the concepts, benefits or operation of Layer 2 firewall filters
    • Filter types
    • Processing order
    • Match criteria and actions
  • Demonstrate knowledge how to configure, monitor, or troubleshoot Layer 2 security
    • Protection
    • Port security
    • Storm control
    • Firewall filter configuration and application

Protocol Independent Routing

  • Identify the concepts, operation or functionality of various protocol-independent routing components
    • Static, aggregate, and generated routes
    • Martian addresses
    • Routing instances, including RIB groups
    • Load balancing
    • Filter-based forwarding
  • Demonstrate knowledge how to configure, monitor, or troubleshoot various protocol-independent routing components
    • Static, aggregate, and generated routes
    • Load balancing
    • Filter-based forwarding

OSPF

  • Describe the concepts, operation or functionality of OSPF
    • Link-state database
    • OSPF packet types
    • Router ID
    • Adjacencies and neighbors
    • Designated router (DR) and backup designated router (BDR)
    • OSPF area and router types
    • LSA packet types
  • Demonstrate knowledge how to configure, monitor or troubleshoot OSPF
    • Areas, interfaces and neighbors
    • Additional basic options
    • Routing policy application
    • Troubleshooting tools (e.g., ping, traceroute,trace options, show commands, logging)

IS-IS

  • Describe the concepts, operation or functionality of IS-IS
    • Link-state database
    • IS-IS PDUs
    • TLVs
    • Adjacencies and neighbors
    • Levels and areas
    • Designated intermediate system (DIS)
    • Metrics
  • Demonstrate knowledge of how to configure, monitor or troubleshoot IS-IS
    • Levels, interfaces and adjacencies
    • Additional basic options
    • Routing policy application
    • Troubleshooting tools (e.g., ping, traceroute, trace options, show commands, logging)

BGP

  • Describe the concepts, operation or functionality of BGP
    • BGP basic operation
    • BGP message types
    • Attributes
    • Route/path selection process
    • IBGP and EBGP functionality and interaction
  • Demonstrate knowledge of how to configure, monitor, or troubleshoot BGP
    • Groups and peers
    • Additional basic options
    • Routing policy application
    • Troubleshooting tools (e.g., ping, traceroute,trace options, show commands, logging)

Tunnels

  • Identify the concepts, requirements or functionality of IP tunneling
    • Tunneling applications and considerations
    • GRE
    • IP-IP
  • Demonstrate knowledge of how to configure, monitor or troubleshoot IP tunnels
    • GRE
    • IP-IP
    • Troubleshooting tools (e.g., ping, traceroute, trace options, show commands, logging)

High Availability

  • Identify the concepts, benefits, applications or requirements for high availability in a Junos OS environment
    • Link aggregation groups (LAG)
    • Redundant trunk groups (RTG)
    • Virtual Chassis
    • Graceful restart (GR)
    • Graceful Routing Engine switchover (GRES)
    • Nonstop active routing (NSR)
    • Nonstop bridging (NSB)
    • Bidirectional Forwarding Detection (BFD)
    • Virtual Router Redundancy Protocol (VRRP)
    • Unified In-Service Software Upgrade (ISSU)
  • Demonstrate knowledge of how to configure, monitor, or troubleshoot high availability components
    • LAG and RTG
    • Virtual Chassis
    • GR, GRES, NSB, and NSR
    • VRRP
    • ISSU
    • Troubleshooting tools (e.g., trace options, show commands, logging)