JN0-352 Certification Exam Guide + Practice Questions Updated 2026

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Comprehensive JN0-352 certification exam guide covering exam overview, skills measured, preparation tips, and practice questions with detailed explanations.

JN0-352 Enterprise Routing and Switching, Specialist (JNCIS-ENT) Exam Overview


The JN0-352 Enterprise Routing and Switching, Specialist (JNCIS-ENT) exam is a required one for earning JNCIS-ENT Certification, which is designed for networking professionals with foundational to intermediate knowledge of routing and switching implementations using Junos OS. This certification validates your ability to configure, troubleshoot, and manage enterprise networking environments effectively.

The JN0-352 written exam consists of 65 multiple-choice questions and must be completed within 90 minutes. The exam is available in English, and candidates receive their pass or fail status immediately upon completion. It focuses on essential networking concepts and practical configuration skills required in real-world enterprise environments.

Earning the JNCIS-ENT certification demonstrates your competency in enterprise routing and switching technologies and enhances your credibility as a networking professional.

Skills Measured in the JN0-352 Exam


The JN0-352 exam evaluates your knowledge across a wide range of enterprise networking topics, including:

Layer 2 Switching and VLANs
Understanding VLAN configuration, tagging, and switching concepts.

Spanning Tree Protocol (STP)
Knowledge of STP operations, variants, and loop prevention techniques.

Layer 2 Security
Implementing security features such as port security and storm control.

Protocol Independent Routing (PIR)
Core routing concepts independent of specific routing protocols.

OSPF (Open Shortest Path First)
Configuration, operation, and troubleshooting of OSPF in enterprise networks.

IS-IS (Intermediate System to Intermediate System)
Understanding IS-IS routing concepts and deployment.

BGP (Border Gateway Protocol)
Basic configuration and operation of BGP for external routing.

Tunnels
Knowledge of tunneling technologies and their use cases.

High Availability (HA)
Ensuring network redundancy and reliability using HA mechanisms.

Mastering these topics ensures that candidates can manage and maintain enterprise-level networks efficiently.

How to Prepare for the JN0-352 Exam?


Preparing for the JN0-352 exam requires a combination of theoretical knowledge and hands-on experience. Here are some effective preparation strategies:

Understand the Exam Objectives
Start by reviewing all exam topics and identifying areas where you need improvement.

Gain Hands-On Experience
Practice configuring routing and switching features using Junos OS in lab environments or simulators.

Use Official Documentation
Study Juniper’s official resources to build a solid understanding of core concepts.

Follow a Structured Study Plan
Allocate time for each topic and maintain a consistent study schedule.

Practice with Real Exam Questions
Test your knowledge regularly to identify gaps and improve time management.

Consistency and practical experience are key to passing the JN0-352 exam on your first attempt.

Why Choose Our JN0-352 Practice Questions?


Our JN0-352 practice questions are carefully designed to reflect the actual exam format and difficulty level. They provide comprehensive coverage of all exam objectives, helping you build confidence and improve accuracy.

With detailed explanations for each question, you not only learn the correct answers but also understand the underlying concepts. This approach ensures deeper knowledge retention and better exam performance.

Regular updates ensure that our materials stay aligned with the latest exam changes, making them a reliable resource for your certification journey.

Practice Questions for JN0-352 Exam


Practicing with high-quality JN0-352 exam questions is one of the most effective ways to prepare for the certification. Practice questions help you become familiar with the exam structure, improve your problem-solving skills, and identify weak areas that require further study. By consistently testing your knowledge, you can boost your confidence and significantly increase your chances of success on the actual exam.

Question#1

You are deploying a Juniper Networks EX Series Switch to connect 24 end devices to VLAN 70, with an uplink interface to a distribution switch that carries VLANs 30, 50, and 70. You need to correctly configure the interface type for the end-device interfaces.
In this scenario, which statement is correct?

A. Use trunk mode with VLAN 70 as the only allowed VLA
B. No configuration is needed since VLAN 70 is the highest VLAN-I
C. Use trunk mode with VLAN 70 set as the native VLA
D. Use access mode and assign the interfaces to VLAN 70.

Question#2

Which statement describes how nonstop active routing (NSR) maintains routing protocol information during a Routing Engine switchover?

A. The backup Routing Engine continuously synchronized protocol states by running the RPD process.
B. The backup Routing Engine retrieves routing information from neighboring routers after a switchover.
C. The primary Routing Engine copies protocol information only when an NSR event begins.
D. The Packet Forwarding Engine updates protocol state based on the most recent LSA or BGP update received.

Question#3

A Juniper Networks EX Series Switch has storm control enabled on all interfaces. The ge-0/o/1 interface carrying several VLANs hits its storm control limit and is shut down.
In this scenario, which command allows you to manually clear the violation?

A. clear interface statistics
B. clear ethernet-switching table
C. clear log messages
D. clear ethernet-switching recovery-timeout

Question#4

Which statement describes how Rapid Spanning Tree Protocol (RSTP) identifies an alternate port?

A. An alternate port is the upstream port that is not receiving BPDUs from the root bridge.
B. An alternate port is the upstream port that provides a backup path to the root bridge and stays in the discarding state.
C. An alternate port is the upstream port that forwards traffic only when the designated port is overloaded.
D. An alternate port is the upstream port that provides the least-cost path to the root bridge.

Question#5

Click the Exhibit button.



A network has three Juniper Networks EX Series Switches connected together. No changes have been made to the default spanning-tree configuration.
Referring to the exhibit, which statement is correct about the root bridge?

A. Switch A will be elected because it has the lowest MAC address.
B. When using RSTP, Switch B will be elected because it is the median MAC address.
C. Switch C will be elected because it has the highest MAC address.
D. The election cannot occur until bridge priority is configured on at least one switch.

Disclaimer

This page is for educational and exam preparation reference only. It is not affiliated with Juniper, JNCIS-ENT, or the official exam provider. Candidates should refer to official documentation and training for authoritative information.

Exam Code: JN0-352Q & A:  65  Q&As Updated:  2026-07-09

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