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Updated: Sep 12, 2026

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Juniper JN0-348 Exam Certification Details:

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

Test Objectives: What Does It Cover?

In summary, JN0-348 exam is meant to give painstaking coverage of the certification concepts by following the recommended curriculum. And to achieve this, it focuses on the following concepts:

  • OSPF;
  • Spanning Tree;
  • BGP;
  • IS-IS;
  • High Availability;
  • Layer 2 Switching or VLANs.
  • Protocol Independent Routing;
  • Layer 2 Security;
  • Tunnels;

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.

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

Juniper JN0-348 Exam Overview:

Certification Vendor:Juniper Networks
Exam Name:Enterprise Routing and Switching, Specialist (JNCIS-ENT)
Exam Number:JN0-348
Exam Format:Multiple Response, Multiple Choice
Related Certifications:Juniper Networks Certified Associate - Junos (JNCIA-Junos)
Juniper Networks Certified Internet Specialist - Enterprise Routing and Switching (JNCIS-ENT)
Certificate Validity Period:3 years
Exam Duration:90 minutes
Available Languages:English
Exam Price:USD 300
Passing Score:60%
Real Exam Qty:65
Sample Questions:Juniper JN0-348 Sample Questions
Exam Way:Pearson VUE testing center or Juniper-authorized online proctored exam.
Pre Condition:JNCIA-Junos certification is recommended before attempting the JNCIS-ENT exam.
Official Syllabus URL:https://www.juniper.net/us/en/training/certification/tracks/enterprise-routing-switching.html

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.

Juniper JN0-348 Exam Syllabus Topics:

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

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