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Juniper Juniper Data Center Certification ✓ Updated May 2026

Juniper Enterprise Routing and Switching Specialist

Exam Code: JN0-348
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About the JN0-348 Exam

The JN0-348 exam, officially known as the Juniper Enterprise Routing and Switching Specialist exam, is a critical certification for network professionals aiming to validate their expertise in Juniper Networks enterprise routing and switching technologies. Administered by Juniper, this exam focuses on the configuration, management, and troubleshooting of advanced enterprise networks using Juniper's Junos OS. Candidates are tested on their ability to implement and optimize routing protocols such as OSPF, BGP, and IS-IS, as well as switching technologies like VLANs, MSTP, and VRRP. Passing this exam demonstrates a deep understanding of Juniper's enterprise solutions, making it a key credential for professionals working with Juniper equipment in data center or campus environments.

This exam is specifically designed for network engineers, administrators, and architects who have foundational knowledge of Juniper technologies and seek to specialize in enterprise routing and switching. It covers real-world scenarios such as deploying high-availability networks, managing traffic flows, and securing enterprise infrastructures. The JN0-348 is part of the Juniper Data Center Certification track, emphasizing its relevance in modern data center operations where scalability and reliability are paramount. By earning this certification, professionals prove their ability to design and maintain robust networks that support critical business applications, from cloud services to IoT integrations.

In the industry, the JN0-348 certification holds significant value as organizations increasingly rely on Juniper solutions for their enterprise and data center networks. It validates skills that are directly applicable to roles like network operations center (NOC) engineers, field support technicians, and network consultants. The exam's focus on practical knowledge ensures that certified individuals can handle complex network challenges, such as optimizing routing policies or troubleshooting Layer 2 loops, which are common in enterprise environments. For businesses, hiring JN0-348-certified professionals reduces downtime and improves network efficiency, making this certification a benchmark for excellence in Juniper-based networking.

Who Should Take the JN0-348 Exam?

The JN0-348 exam is ideal for network engineers, administrators, and technical support staff with at least one year of experience working with Juniper Junos OS. Candidates should have a solid understanding of basic routing and switching concepts, including OSPF, BGP, and VLANs, and be familiar with Juniper's enterprise hardware like EX Series switches and MX Series routers. This exam is also suitable for professionals pursuing the Juniper Data Center Certification who want to specialize in enterprise routing and switching, or those looking to advance their careers in network architecture and design.

Topics Covered in JN0-348

📊
Routing fundamentals and advanced OSPF configuration
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BGP attributes, policies, and route selection
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IS-IS protocol configuration and troubleshooting
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Spanning Tree Protocol variants (RSTP, MSTP)
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VLAN design, trunking, and inter-VLAN routing
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High availability with VRRP and GRES
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Junos OS security features (firewall filters, NAT)
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Network management with SNMP, J-Web, and CLI

Preparation Tips for JN0-348

Focus on hands-on lab practice with Juniper vLabs or physical equipment to configure OSPF, BGP, and MSTP, as the exam emphasizes real-world troubleshooting scenarios.
Study Juniper's official documentation, particularly the Junos OS Routing Protocols Library and Switching Configuration Guide, to understand protocol specifics and best practices.
Review BGP path selection and attribute manipulation thoroughly, as questions often require applying complex routing policies to influence traffic flow.
Practice troubleshooting common issues like spanning tree loops or OSPF adjacency failures using CLI commands like 'show log' and 'monitor traffic'.
Take advantage of Juniper's free JNCIA-Junos training as a prerequisite, and then use the JN0-348 exam blueprint to identify gaps in your knowledge.

Frequently Asked Questions — JN0-348

What is the passing score for the JN0-348 exam?

Juniper does not publicly disclose the exact passing score for the JN0-348 exam. The exam is scored on a scale, and you must achieve a minimum passing score, which is determined by Juniper based on the difficulty of the questions. Typically, you need to answer around 60-70% of the questions correctly to pass. It's best to focus on thorough preparation using official materials and practice exams to maximize your chances.

How many questions are on the JN0-348 exam, and what is the time limit?

The JN0-348 exam consists of 65 multiple-choice questions, and you have 90 minutes to complete it. The questions are a mix of single-answer and multiple-answer types, covering topics like routing protocols, switching technologies, and Junos OS security. Time management is important, so allocate about 1-2 minutes per question to ensure you have enough time for complex scenarios.

Are there any prerequisites for taking the JN0-348 exam?

Yes, Juniper recommends that candidates have a valid JNCIA-Junos certification (JN0-104) or equivalent knowledge before attempting the JN0-348 exam. While not mandatory, having this foundational understanding of Junos OS basics, such as CLI navigation and configuration management, is crucial for success. Additionally, practical experience with enterprise routing and switching is highly beneficial.

How many questions are in the ExamsTree JN0-348 study guide?
The ExamsTree JN0-348 PDF study guide contains 100+ practice questions with detailed answer explanations, all mapped to the official Juniper exam objectives.

Why Choose ExamsTree?

ExamsTree JN0-348 Study Guide is developed by experienced certification professionals with deep knowledge of Juniper technologies. Our team thoroughly researches each exam domain to provide comprehensive, accurate coverage.

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Exam Details
Vendor Juniper
Questions 100+
Format PDF
Updated 5/24/2026
Cert Juniper Data Center Certification
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