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Updated: Sep 08, 2026
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Juniper JN0-348 Exam Overview:
| Certification Vendor: | Juniper Networks |
|---|---|
| Exam Name: | Enterprise Routing and Switching, Specialist (JNCIS-ENT) |
| Exam Number: | JN0-348 |
| Certificate Validity Period: | 3 years |
| Exam Price: | $200 USD |
| Exam Format: | Multiple choice, Scenario-based questions |
| Exam Duration: | 90 minutes |
| Available Languages: | English |
| Passing Score: | Variable scaled score (typically ~65-70%) |
| Real Exam Qty: | 65 |
| Related Certifications: | JNCIA-Junos JNCIE-ENT JNCIP-ENT |
| Recommended Training: | Junos Intermediate Routing (JIR) Junos Enterprise Routing and Switching |
| Exam Registration: | Juniper Exam Page Pearson VUE Registration |
| Sample Questions: | Juniper JN0-348 Sample Questions |
| Exam Way: | Delivered online or at test centers via Pearson VUE |
| Pre Condition: | Recommended prerequisite: JNCIA-Junos certification (JN0-104 or equivalent knowledge) |
| Official Syllabus URL: | https://www.juniper.net/training/certification/exams/jn0-348.html |
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 Certification Details:
| Recommended Training | Junos Intermediate Routing (JIR) Junos Enterprise Switching (JEX) |
| Duration | 90 minutes |
| Number of Questions | 65 |
| Exam Price | $300 USD |
| Passing Score | Variable (60-70% Approx.) |
| Exam Registration | PEARSON VUE |
| Exam Code | JN0-348 JNCIS-ENT |
| Exam Name | Enterprise Routing and Switching Specialist |
| Sample Questions | Juniper JN0-348 Sample Questions |
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 Topics:
| Section | Objectives |
|---|---|
| OSPF | Describe the concepts, operation or functionality of OSPF
Demonstrate knowledge how to configure, monitor or troubleshoot OSPF
|
| Layer 2 Security | Identify the concepts, benefits or operation of various Layer 2 protection or security features
Identify the concepts, benefits or operation of Layer 2 firewall filters
Demonstrate knowledge how to configure, monitor, or troubleshoot Layer 2 security
|
| Protocol Independent Routing | Identify the concepts, operation or functionality of various protocol-independent routing components
Demonstrate knowledge how to configure, monitor, or troubleshoot various protocol-independent routing components
|
| Layer 2 Switching or VLANs | Identify the concepts, operation, or functionality of Layer 2 switching for the Junos OS
Describe the concepts, benefits, or functionality of VLANs
Demonstrate knowledge how to configure, monitor or troubleshoot Layer 2 switching or VLANs
|
| IS-IS | Describe the concepts, operation or functionality of IS-IS
Demonstrate knowledge of how to configure, monitor or troubleshoot IS-IS
|
| High Availability | Identify the concepts, benefits, applications or requirements for high availability in a Junos OS environment
Demonstrate knowledge of how to configure, monitor, or troubleshoot high availability components
|
| Spanning Tree | Describe the concepts, benefits, operation, or functionality of the Spanning Tree Protocol
Demonstrate knowledge how to configure, monitor, or troubleshoot STP and RSTP
|
| Tunnels | Identify the concepts, requirements or functionality of IP tunneling
Demonstrate knowledge of how to configure, monitor or troubleshoot IP tunnels
|
| BGP | Describe the concepts, operation or functionality of BGP
Demonstrate knowledge of how to configure, monitor, or troubleshoot BGP
|
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