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Juniper JN0-349 Exam Topics:

SectionObjectives
Spanning TreeDescribe 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
BGPDescribe 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)
TunnelsIdentify 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)
Protocol Independent RoutingIdentify 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
IS-ISDescribe 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)
Layer 2 SecurityIdentify 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
High AvailabilityIdentify 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)
Layer 2 Switching or VLANsIdentify 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
OSPFDescribe 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)

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Juniper Networks is a leading provider of networking solutions that enable organizations to build scalable and secure networks. To validate the skills and knowledge of network professionals, Juniper offers a range of certification programs. One of the most sought-after certifications is the Juniper JN0-349 (Enterprise Routing and Switching, Specialist (JNCIS-ENT)) Certification Exam.

Reference: https://www.juniper.net/us/en/training/certification/tracks/enterprise-routing-switching/jncis-ent.html

The JN0-349 exam tests the candidate's knowledge of Junos routing and switching, including OSPF, BGP, Ethernet switching, virtual LANs, and other related technologies. JN0-349 exam also covers the configuration and troubleshooting of Juniper Networks devices, as well as the use of J-Web, Junos Space, and other Juniper tools for network management. Candidates must have a strong understanding of networking concepts and protocols and be able to apply this knowledge to real-world scenarios.

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Juniper JN0-349 exam is designed for individuals who want to become certified in enterprise routing and switching. The JNCIS-ENT certification program is intended to validate the knowledge and skills of network engineers who are responsible for implementing, configuring, and troubleshooting Juniper Networks routing and switching products. Passing the JN0-349 exam demonstrates that the candidate has a thorough understanding of the concepts, protocols, and technologies related to enterprise routing and switching.

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Juniper JN0-349 Exam Syllabus Topics:

SectionObjectives
BGP and Routing Policy- BGP session establishment and attributes
- Route redistribution and path control
- Route policies and filtering
Enterprise Network Services and Troubleshooting- Network troubleshooting methodologies
- Monitoring and verification commands in Junos
Layer 2 Switching- Switching troubleshooting
- Spanning Tree Protocol (STP/RSTP/MSTP)
- VLAN configuration and trunking
Enterprise Routing Fundamentals- Junos OS routing architecture
- Route preferences and route selection
- Routing tables and forwarding concepts
OSPF and IS-IS- LSA types and OSPF troubleshooting
- IS-IS fundamentals and configuration
- OSPF area types and configuration

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