Juniper JN0-348 dumps - in .pdf

JN0-348 pdf
  • Exam Code: JN0-348
  • Exam Name: Enterprise Routing and Switching, Specialist (JNCIS-ENT)
  • Updated: Jul 20, 2026
  • Q & A: 95 Questions and Answers
  • PDF Price: $59.99

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  • Exam Code: JN0-348
  • Exam Name: Enterprise Routing and Switching, Specialist (JNCIS-ENT)
  • Updated: Jul 20, 2026
  • Q & A: 95 Questions and Answers
  • PDF Version + PC Test Engine + Online Test Engine
  • Value Pack Total: $119.98  $79.99
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Juniper JN0-348 dumps - Testing Engine

JN0-348 Testing Engine
  • Exam Code: JN0-348
  • Exam Name: Enterprise Routing and Switching, Specialist (JNCIS-ENT)
  • Updated: Jul 20, 2026
  • Q & A: 95 Questions and Answers
  • Software Price: $59.99
  • Testing Engine

About Juniper JN0-348 Exam Test Dumps

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Training for Your Test: Is There Easier Path?

While qualifying for your exam may not seem challenging, the real test lies with the choice of study materials. So, we will be covering the two best paths to help you prepare for your Juniper JN0-348 exam easily:

1. Junos Intermediate Routing (JIR)

The Junos Intermediate Routing (JIR) course is a two-day package that validates the mid-level knowledge of routing implementation in line with the actual exam content outline. This course summarizes the details of protocol-independent routing features, OSPF, IP tunneling, high availability, and load balancing. Also, it combines labs and useful demonstrations to help candidates prove their enthusiasm for routing concepts including the configuration and monitoring of the Junos technologies. What’s more, this course adopts the Juniper Networks vSRX Series Services Gateways to help candidates gain vital hands-on skills and is entirely built around the Junos OS Release 18.2R1.9. As an intermediate-level class, all individuals tasked with monitoring or configuring devices running on the Junos OS would benefit from this training. However, all trainees must first demonstrate an understanding of the TCP/IP suite and the OSI model. Besides, they must complete the introductory course, Junos Operating System, before registering for this training. As you remember, this course only runs for two days so you should never assume that the content will be shallow as it remains a comprehensive training covering all aspects of the Junos Enterprise Routing and Switching. When the training initially begins, the instructors will be eager to introduce the course and leave it at that point. Then, they will focus on protocol-independent routing, open shortest path first, and load balancing with filter-based forwarding to complete the first day of training. On the second and last day, the course will verify the knowledge of border gateway protocol, High Availability, and IP tunneling. This stage focuses on the popular concepts of BFD, VRRP, nonstop active routing, BGP attributes, and GRE tunnels.

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

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Juniper JN0-348 Exam Topics:

SectionObjectives
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)
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)
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)
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 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
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
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)
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)

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What Is Juniper Networks Certified Internet Specialist - Enterprise Routing and Switching?

This certification is targeted towards seasoned networking specialists with advanced knowledge of routing and switching implementations within Junos. In general, such a certificate measures the basic knowledge of routing and switching concepts and how they relate to platform configuration and other relevant skills. The prerequisite training for attaining this designation is the mid-level Juniper Networks Certified Internet Associate - Junos certification. Of course, we can’t fail to mention the fact this Juniper certificate is part of the broader Juniper Enterprise Routing and Switching Certification Path which also includes the aforementioned JNCIA-Junos certification.

Juniper JN0-348 Exam Syllabus Topics:

SectionWeightObjectives
Topic 1: BGP15% - 20%- BGP Routing
  • 1. BGP attributes
  • 2. Routing policies
  • 3. BGP peering
  • 4. Path selection process
Topic 2: Tunneling and Network Services5% - 10%- Tunneling Technologies
  • 1. GRE tunnels
  • 2. Traffic forwarding concepts
Topic 3: Routing Fundamentals15% - 20%- IP Routing Concepts
  • 1. Load balancing
  • 2. Routing tables and route preference
  • 3. Static routing
Topic 4: OSPF15% - 20%- OSPF Operation
  • 1. Route summarization
  • 2. LSA types
  • 3. Neighbor establishment
  • 4. Area concepts
Topic 5: IS-IS10% - 15%- IS-IS Fundamentals
  • 1. Adjacency formation
  • 2. Route propagation
  • 3. Level 1 and Level 2 routing
Topic 6: Layer 2 Switching and VLANs15% - 20%- Ethernet Switching Fundamentals
  • 1. Switching and bridging concepts
  • 2. Frame processing
  • 3. MAC learning and forwarding
- VLAN Technologies
  • 1. Trunk and access ports
  • 2. 802.1Q tagging
  • 3. VLAN configuration and verification
Topic 7: Layer 2 Security and Loop Prevention10% - 15%- Security Features
  • 1. Layer 2 access control mechanisms
  • 2. Port security concepts
- Spanning Tree Technologies
  • 1. Loop and root protection
  • 2. BPDU protection
  • 3. STP and RSTP operation
Topic 8: High Availability5% - 10%- Redundancy Technologies
  • 1. Link aggregation groups
  • 2. VRRP
  • 3. Virtual Chassis

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