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Juniper JN0-349 Exam Overview :

Exam Name Enterprise Routing and Switching - Specialist (JNCIS-ENT)
Exam Code JN0-349
Actual Exam Duration 90 minutes
Expected no. of Questions in Actual Exam 65
Official Information https://www.juniper.net/us/en/training/certification/tracks/enterprise-routing-switching/jncis-ent.html
See Expected Questions Juniper JN0-349 Expected Questions in Actual Exam
Take Self-Assessment Use Juniper JN0-349 Practice Test to Assess your preparation - Save Time and Reduce Chances of Failure

Juniper JN0-349 Exam Topics :

Section Weight Objectives
Layer 2 Switching or 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
  • 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 Spanning Tree
  • 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
  • Realms
  • 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)

Updates in the Juniper JN0-349 Exam Syllabus:

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