Enterprise Routing and Switching, Specialist (JNCIS-ENT): JN0-348 Exam

"Enterprise Routing and Switching, Specialist (JNCIS-ENT)", also known as JN0-348 exam, is a Juniper Certification. With the complete collection of questions and answers, PrepPDF has assembled to take you through 95 Q&As to your JN0-348 Exam preparation. In the JN0-348 exam resources, you will cover every field and category in JNCIS-ENT Certification helping to ready you for your successful Juniper Certification.

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  • Exam Code: JN0-348
  • Exam Name: Enterprise Routing and Switching, Specialist (JNCIS-ENT)
  • Certification Provider: Juniper
  • Corresponding Certification: JNCIS-ENT
  • Updated: May 29, 2026
  • No. of Questions: 95 Questions & Answers with Testing Engine
  • Download Limit: Unlimited

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Juniper JN0-348 Exam Certification Details:

Exam CodeJN0-348 JNCIS-ENT
Exam RegistrationPEARSON VUE
Duration90 minutes
Exam Price$300 USD
Recommended TrainingJunos Intermediate Routing (JIR)
Junos Enterprise Switching (JEX)
Exam NameEnterprise Routing and Switching Specialist
Sample QuestionsJuniper JN0-348 Sample Questions
Number of Questions65
Passing ScoreVariable (60-70% Approx.)

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Juniper JN0-348 Exam Topics:

SectionObjectives
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
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)
Tunnels

Identify the concepts, requirements or functionality of IP tunneling

  • Tunneling applications and considerations
  • GRE/UDP
  • IP-IP

Demonstrate knowledge of how to configure, monitor or troubleshoot IP tunnels

  • GRE/UDP
  • IP-IP
  • Troubleshooting tools (e.g., ping, traceroute, trace options, show commands, logging)
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)
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)
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
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)
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
  • Junos Network Director
  • Inter-VLAN Routing

Reference: https://www.juniper.net/us/en/training/certification/certification-tracks/ent-routing-switching-track/?tab=jncis-enterprise

Conclusion

If you’ve ever wanted to obtain recognized IT skills that will set you apart, the Juniper Networks Certified Internet Specialist - Enterprise Routing and Switching (JNCIS-ENT) certification is the way to go. It is more than just a way to validate your skills. Simply pass JN0-348 exam today and distinguish yourself from your peers.

You may urgently need to attend Juniper certificate exam and get the certificate to prove you are qualified for the job in some area. But what certificate is valuable and useful and can help you a lot? Passing the test certification can help you prove that you are competent in some area and if you buy our JN0-348 study materials you will pass the test almost without any problems. There are many benefits after you pass the certification such as you can enter in the big company and double your wage. Our JN0-348 study materials boost high passing rate and hit rate so that you needn't worry that you can't pass the test too much. We provide free tryout before the purchase to let you decide whether it is valuable or not by yourself. To further understand the merits and features of our JN0-348 practice engine you could look at the introduction of our product in detail.

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