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

JN0-348 real exams

Exam Code: JN0-348

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

Updated: Nov 04, 2026

Q & A: 95 Questions and Answers

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About Juniper JN0-348 Exam

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.

The Juniper JN0-348 is the qualifying exam for the Juniper Networks Certified Internet Specialist - Enterprise Routing and Switching (JNCIS-ENT) certification. It validates IT specialists with intermediate-level knowledge required to implement routing and switching concepts in the Juniper Junos.

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Juniper JN0-348 Exam Certification Details:

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

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

2. Junos Enterprise Switching (JEX)

The Junos Enterprise Switching (JEX) is the second course associated with the Junos JN0-348 exam. Like the first class, it is also a two-day training program but with an emphasis on switching knowledge and the relevant configuration skills. It includes in-depth coverage of switching concepts, the Spanning Tree Protocol (STP), virtual LANs, and the features of high availability as well as device security. The training is exclusively centered on the Junos OS Release 20.1R1.11 and features interactive demonstrations alongside hands-on labs to ensure candidates are aptly prepared to face their exams. If you have already acquired the basic routing skills and are now looking to prove your ability to manage or troubleshoot networks, this training is the way forward. All in all, this course targets IT specialists of two groups:

  • Individuals with fundamental knowledge of the OSI model and TCP/IP protocol suite;
  • Candidates who have already attempted and passed the Introduction to Junos Operating System (IJOS) lessons.

Also, you should be proficient in knowing with the relevant Juniper products before registering for this training: Junos OS, EX Series, and Switching. As for the course content, on the 1st day of your training, you can expect the instructors to start by introducing the course before addressing Switching Concepts, Virtual Networks, and the Spanning Tree. The real task, however, lies on the second day, where the trainers will now cover the topics of Port Security, Device Security and Firewall Filters, Virtual Chassis, and High Availability. Here, self-motivated candidates who have already mastered the objectives of MAC Limiting, MACsec, Storm Control, Firewall Filters, and Nonstop Bridging (NSB) among other skills will find it easier to grasp the tested concepts.

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Juniper JN0-348 Exam Syllabus Topics:

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

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