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Juniper JN0-351 Dumps - Pass Enterprise Routing and Switching, Specialist Exam in 2026

The Juniper JN0-351 - Enterprise Routing and Switching, Specialist exam is part of the Juniper Data Center Certification track and is designed for professionals who work with enterprise routing and switching technologies. It validates core knowledge of routing, switching, security, and high availability concepts in Juniper environments. This exam matters for candidates who want to prove practical skills in configuring and troubleshooting modern network infrastructure. Passing it shows that you are ready to handle essential data center networking tasks with confidence.

# Exam Topics Sub-Topics Approximate Weightage (%)
1 Layer 2 Switching or VLANs VLAN configuration, trunking, access ports, switching fundamentals 12%
2 Spanning Tree STP operation, loop prevention, bridge roles, topology changes 10%
3 Layer 2 Security Port security, MAC filtering, rogue device protection, access controls 8%
4 Protocol Independent Routing Static routes, route preferences, forwarding behavior, route selection 12%
5 OSPF Neighbor relationships, areas, route exchange, OSPF troubleshooting 14%
6 IS-IS Adjacencies, levels, link-state behavior, protocol configuration 10%
7 BGP Peering, path selection, route advertisement, policy basics 14%
8 Tunnels Tunnel concepts, encapsulation, connectivity, basic deployment use cases 10%
9 High Availability Redundancy, failover behavior, resilient design, service continuity 10%

The JN0-351 exam tests both conceptual understanding and practical application across switching, routing, security, and resiliency topics. Candidates must be able to recognize how protocols work, choose the right configuration approach, and troubleshoot common network behavior. It is designed to measure depth of knowledge, not just memorization, so hands-on familiarity with enterprise routing and switching is important.

How QA4Exam.com Helps You Pass

QA4Exam.com offers Exam PDF content with actual questions and answers, along with an Online Practice Test for the Juniper JN0-351 exam. These materials help you study with up-to-date questions, verified answers, and a format that reflects real exam style. The practice test gives you a realistic simulation so you can improve time management and build confidence before exam day. With focused preparation and repeated practice, you can identify weak areas faster and prepare more effectively for first-attempt success.

Frequently Asked Questions

Is the Juniper JN0-351 exam only for experienced networking professionals?

It is best suited for candidates who already understand enterprise routing and switching concepts, especially those working toward the Juniper Data Center Certification path. Experience is helpful because the exam focuses on practical knowledge and protocol behavior.

How difficult is the Enterprise Routing and Switching, Specialist exam?

The exam can be challenging because it covers multiple core areas such as OSPF, BGP, IS-IS, switching, and high availability. Candidates who study the topics carefully and practice consistently are better prepared for the question style and technical depth.

Can I pass JN0-351 with only braindumps?

Braindumps alone are not the best strategy because the exam tests understanding, not just memorization. You should use dumps as a study aid together with hands-on practice and topic review to improve your chances of passing.

Do I need hands-on experience to pass the exam?

Hands-on experience is strongly recommended because many topics, including routing protocols and high availability, are easier to understand when you have worked with real configurations. Practical exposure helps you answer scenario-based questions more confidently.

Are the QA4Exam.com dumps and practice test enough for first attempt preparation?

They are a strong preparation tool because they provide actual questions and answers, verified content, and a realistic online practice format. For best results, combine them with topic review so you understand the concepts behind each answer.

How do the QA4Exam.com Exam PDF and Online Practice Test help with time management?

The Online Practice Test helps you work under exam-like timing so you can learn how to pace yourself. The Exam PDF supports repeated review of questions and answers, which helps you answer faster and more accurately during the real test.

The questions for JN0-351 were last updated on Jul 22, 2026.
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Question No. 1

Exhibit

Your ISP is announcing a default route to both R1 and R2. You want your network routers to forward all Internet traffic through the R1 device

Which BGP attribute would you use?

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Correct Answer: C

The BGP attribute that you would use to forward all Internet traffic through the R1 device is thelocal preference1.

The local preference is an attribute that is used within an autonomous system (AS) and exchanged between iBGP routers1.It is used to select an exit point from the AS1.The path with the highest local preference is preferred1.By setting a higher local preference for the routes received from R1, you can make R1 the preferred exit point for all Internet traffic1.


Question No. 2

You implemented the MAC address limit feature with the shutdown action on all interfaces on your switch.

In this scenario, which statement is correct when a violation occurs?

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Correct Answer: A

When the MAC address limit feature with the shutdown action is implemented on a switch, if a violation occurs, the interface is disabled and a system log entry is generated1.If the switch has been configured with the port-error-disable statement, the disabled interface recovers automatically upon expiration of the specified disable timeout1.However, if the switch has not been configured for auto-recovery from port error disabled conditions, you must manually clear the violation by running the clear ethernet-switching port-error command for the interface to send and receive traffic again1.This explanation is based on the Enterprise Routing and Switching Specialist (JNCIS-ENT) documents and learning resources available at Juniper Networks1.


Question No. 3

Exhibit.

You have configured the four EX Series switches with RSTP, as shown in the exhibit. You discover that whenever a link between switches goes up or down, the switches take longer than expected for RSTP to converge, using the default settings.

In this scenario, which action would solve the delay in RSTP convergence?

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Correct Answer: B

The exhibit shows the configuration of RSTP on EX-4, which has the commandforce-version stp.This command forces the switch to use the legacy STP protocol instead of RSTP, even though the switch supports RSTP1.This means that EX-4 will not be able to take advantage of the faster convergence and enhanced features of RSTP, such as edge ports, link type, and proposal/agreement sequence2.

The other switches in the network are likely to be running RSTP, as it is the default protocol for EX Series switches3. Therefore, there will be a compatibility issue between EX-4 and the other switches, which will result in longer convergence times and suboptimal performance.The switch will also generate a warning message that says ''Warning: STP version mismatch with neighbor'' when it receives a BPDU from a RSTP neighbor1.

To solve this problem, the force-version command must be removed from EX-4, so that it can run RSTP natively and interoperate with the other switches in the network. This will enable faster convergence and better stability for the network topology.To remove the command, you can use thedelete protocols rstp force-versioncommand in configuration mode1.


Question No. 4

You want to ensure traffic is routed through a GRE tunnel.

In this scenario, which two statements will satisfy this requirement? (Choose two.)

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Correct Answer: A, B

Option A is correct. For traffic to be sent through a GRE tunnel, there must be a route that directs the traffic into the tunnel. This is typically accomplished through the use of a static route or a dynamic routing protocol.

Option B is correct. All intermediary devices must have a route to the tunnel endpoints34. In real-world scenarios, the tunnel endpoints for a tunnel going over the Internet must have globally reachable internet addresses. Otherwise, intermediate routers in the Internet cannot forward the tunneled packets.


Question No. 5

Exhibit

You are receiving the BGP route shown in the exhibit from four different upstream ISPs.

Referring to the exhibit, which ISP will be selected as the active path?

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Correct Answer: C

In BGP, the path selection process is based on a set of attributes1.The process starts by preferring the path with the highest weight, then the highest local preference, then the locally originated routes, and so on1.If all these attributes are the same, then it prefers the path with the shortest AS path1.

Referring to the exhibit, all four ISPs have the same weight, local preference, and origin1.However, ISP 4 has the shortest AS path1. Therefore, ISP 4 will be selected as the active path. So, option C is correct.


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