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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 Sep 2, 2026.
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Question No. 1

You are a network operator who wants to add a second ISP connection and remove the default route to the existing ISP You decide to deploy the BGP protocol in the network.

What two statements are correct in this scenario? (Choose two.)

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Correct Answer: A, B

Ais correct because IBGP updates the next-hop attribute to ensure reachability within an AS. This is because the next-hop attribute is the IP address of the router that advertises the route to a BGP peer. If the next-hop attribute is not changed by IBGP, it would be the IP address of an external router, which may not be reachable by all routers within the AS.Therefore, IBGP updates the next-hop attribute to the IP address of the router that received the route from an EBGP peer1.

Bis correct because IBGP peers advertise routes received from EBGP peers to other IBGP peers. This is because BGP follows the rule of advertising only the best route to a destination, and EBGP routes have a higher preference than IBGP routes.Therefore, IBGP peers advertise routes learned from an EBGP peer to all BGP peers, including both EBGP and IBGP peers1.


Question No. 2

You need to configure a LAG between your switches. In this scenario, which two statements are correct? (Choose two.)

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Correct Answer: B, C

Bis correct because duplex and speed settings are required to match on both participating devices.According to the Juniper Networks documentation1, all the interfaces in a LAG must have the same speed and be in full-duplex mode. This ensures that the LAG can operate as a single logical link without any performance or compatibility issues.

Cis correct because member links are not required to be contiguous ports.According to the Juniper Networks documentation2, you can group any Ethernet interfaces on a switch into a LAG, regardless of their physical location or slot number. This provides flexibility and scalability for configuring LAGs on switches.


Question No. 3

Refer to the exhibit.

Referring to the output shown in the exhibit, which statement is correct?

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Correct Answer: B

In OSPF, the state of the neighbor relationship is determined by the exchange of OSPF packets between routers1.The state ''2Way'' as shown in the exhibit indicates that bi-directional communication has been established between the two OSPF routers1.This is the normal state for a neighbor that is not the Designated Router (DR) or Backup Designated Router (BDR) on a broadcast, non-broadcast multi-access (NBMA), or point-to-multipoint network1.These neighbors are often referred to as 'DRothers'1. Therefore, option B is correct.


Question No. 4

Exhibit

Your BGP neighbors, one in the USA and one in France, are not establishing a connection with each other.

Referring to the exhibit, which statement is correct?

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Correct Answer: B

The exhibit shows the configuration of BFD liveness detection for BGP at the global level, which applies to all BGP neighbors by default1.However, this configuration does not specify the session mode, which determines whether BFD uses single-hop or multihop mode to communicate with a neighbor2.

For single-hop BGP neighbors, which are directly connected on the same subnet, the session mode can be either automatic or single-hop.For multihop BGP neighbors, which are not directly connected and require multiple hops to reach, the session mode must be multihop2.

Since your BGP neighbors are in different countries, they are likely to be multihop neighbors.Therefore, you need to configure the session mode as multihop for each neighbor individually at the [edit protocols bgp group group-name neighbor address bfd-liveness-detection] hierarchy level2. For example:

protocols { bgp { group usa { neighbor 192.0.2.1 { bfd-liveness-detection { session-mode multihop; } } } group france { neighbor 198.51.100.1 { bfd-liveness-detection { session-mode multihop; } } } } }

If you do not configure the session mode for multihop neighbors, BFD will use the default mode of automatic, which will try to use single-hop mode and fail to establish a BFD session with the remote neighbor2. This will prevent BGP from using BFD to detect liveliness and failover.

Therefore, the answerBis correct, as you need to configure the BFD liveness detection on the BGP neighbor level with the appropriate session mode for multihop neighbors.


Question No. 5

Which two statements about BGP facilitate the prevention of routing loops between two autonomous systems? (Choose two.)

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Correct Answer: A, C

BGP (Border Gateway Protocol) is a protocol designed to exchange routing and reachability information among autonomous systems (AS) on the internet1.

Option A is correct.When an EBGP router advertises routes to its neighbors, it appends its AS number to the AS_PATH attribute1.This is a key mechanism in BGP to prevent routing loops1.

Option C is correct.BGP has a built-in loop prevention mechanism whereby if a BGP router detects its own AS in the AS_PATH attribute, it will drop the prefix and will not continue to advertise it2.This helps to prevent routing loops2.

Option B is incorrect.EBGP routers do not accept routes that contain their own AS number in the AS_PATH2.Instead, they drop such routes as part of the loop prevention mechanism2.

Option D is incorrect.While it's true that EBGP routers append their AS number when advertising routes, they do not prepend their AS number1.The term ''prepend'' in BGP usually refers to a technique used to influence path selection by artificially lengthening the AS_PATH3.


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