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Updated: Jul 29, 2026

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What to Know about Exam

The Juniper JN0-348, like many Juniper tests, lasts 90 minutes with a maximum of 65 multiple-choice items. It is an exam that’s offered through the Pearson VUE website and candidates are usually graded based on pass/fail status. Juniper recommends that the willing exam-takers must be well-conversant with the Junos Space Network Director 3.1 and Junos 18.4 before registering for this test.

Juniper JN0-348 Exam Overview:

Certification Vendor:Juniper Networks
Exam Name:Enterprise Routing and Switching, Specialist (JNCIS-ENT)
Exam Number:JN0-348
Passing Score:60%
Exam Price:USD 300
Available Languages:English
Real Exam Qty:65
Related Certifications:Juniper Networks Certified Internet Specialist - Enterprise Routing and Switching (JNCIS-ENT)
Juniper Networks Certified Associate - Junos (JNCIA-Junos)
Exam Format:Multiple Choice, Multiple Response
Exam Duration:90 minutes
Certificate Validity Period:3 years
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

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.

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 Certification Details:

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

Juniper JN0-348 Exam Syllabus Topics:

SectionWeightObjectives
Topic 1: Tunneling and Network Services5% - 10%- Tunneling Technologies
  • 1. Traffic forwarding concepts
  • 2. GRE tunnels
Topic 2: 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. VLAN configuration and verification
  • 3. 802.1Q tagging
Topic 3: BGP15% - 20%- BGP Routing
  • 1. Path selection process
  • 2. Routing policies
  • 3. BGP attributes
  • 4. BGP peering
Topic 4: Routing Fundamentals15% - 20%- IP Routing Concepts
  • 1. Static routing
  • 2. Load balancing
  • 3. Routing tables and route preference
Topic 5: OSPF15% - 20%- OSPF Operation
  • 1. Route summarization
  • 2. Area concepts
  • 3. Neighbor establishment
  • 4. LSA types
Topic 6: High Availability5% - 10%- Redundancy Technologies
  • 1. VRRP
  • 2. Link aggregation groups
  • 3. Virtual Chassis
Topic 7: IS-IS10% - 15%- IS-IS Fundamentals
  • 1. Adjacency formation
  • 2. Level 1 and Level 2 routing
  • 3. Route propagation
Topic 8: 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

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