Deal of The Day! Hurry Up, Grab the Special Discount - Save 25% - Ends In 00:00:00 Coupon code: SAVE25
Welcome to Pass4Success

- Free Preparation Discussions
Mail Us support@pass4success.com
Location US
Mob_nav_barsMENU
  • Home
  • Juniper
  • JN0-351: Enterprise Routing and Switching, Specialist

Juniper JN0-351 Exam Questions

Exam Name: Enterprise Routing and Switching, Specialist
Exam Code: JN0-351
Related Certification(s): Juniper Data Center Certification
Certification Provider: Juniper
Actual Exam Duration: 90 Minutes
Number of JN0-351 practice questions in our database: 65 (updated: Apr. 06, 2026)
Expected JN0-351 Exam Topics, as suggested by Juniper :
  • Topic 1: Layer 2 Switching or VLANs: This topic deepens the understanding of Layer 2 switching operations within the Junos OS, including VLAN concepts and benefits. Experienced networking professionals gain insights into configuration, monitoring, and troubleshooting techniques essential for network segmentation and efficiency.
  • Topic 2: Spanning Tree: Networking professionals explore the principles and advantages of the Spanning Tree Protocol (STP) to ensure loop-free topologies in Layer 2 networks.
  • Topic 3: Layer 2 Security: This topic introduces Layer 2 protection mechanisms and firewall filters to fortify network security. Practical skills in configuring, monitoring, and troubleshooting these features prepare candidates to address exam objectives and real-world challenges effectively.
  • Topic 4: Protocol Independent Routing: An essential domain for understanding routing components outside protocol dependencies, this topic enhances expertise in configuring, monitoring, and troubleshooting critical elements.
  • Topic 5: OSPF: The concepts and operational details of OSPF are explored, providing tools for routing efficiency. Configuration and troubleshooting mastery ensure readiness for both the exam and complex enterprise environments.
  • Topic 6: IS-IS: Aspiring Juniper networking professionals enhance their understanding of IS-IS routing protocols. This topic equips candidates with the knowledge to configure and monitor IS-IS systems, addressing specific exam challenges and practical applications.
  • Topic 7: BGP: This topic focuses on the operational and conceptual elements of BGP, a cornerstone in enterprise networks.
  • Topic 8: Tunnels: The fundamentals of IP tunneling are emphasized, highlighting their requirements and functionalities. Mastery in configuring, monitoring, and troubleshooting tunnels equips professionals to meet the demands of the JN0-351 exam.
  • Topic 9: High Availability: This topic covers the importance and application of high availability within Junos OS environments. Knowledge in configuring and managing these components is critical for ensuring robust and uninterrupted network operations, aligning with exam expectations.
Disscuss Juniper JN0-351 Topics, Questions or Ask Anything Related
0/2000 characters
Submit Cancel

Dannie

11 days ago
I was anxious about unfamiliar command sets, but Pass4Success broke them down into steps and gave me confidence—keep studying, you'll ace it!
upvoted 0 times
...

Vashti

18 days ago
Anxiety about tricky troubleshooting faded after Pass4Success practice scenarios—trust the process and you'll emerge prepared and proud.
upvoted 0 times
...

Lucy

26 days ago
Confidence is key when taking the Juniper Enterprise Routing and Switching, Specialist exam. Pass4Success helped me get there.
upvoted 0 times
...

Clemencia

1 month ago
I doubted my readiness, but Pass4Success offered realistic simulations that built confidence—you're almost there, stay motivated!
upvoted 0 times
...

Sharee

1 month ago
Honestly, I couldn't have done it without the pass4success practice tests. Revise thoroughly, and don't underestimate the importance of hands-on experience.
upvoted 0 times
...

Vashti

2 months ago
Understanding MPLS and TE complexity was overwhelming; Pass4Success drills broke down the concepts and the timing I needed for the exam.
upvoted 0 times
...

Darnell

2 months ago
IPv6 routing and transition mechanisms posed tricky questions; the practice sets helped me map questions to concrete commands, and pass4success reinforced them.
upvoted 0 times
...

Jerry

2 months ago
I worried I wouldn't manage the timing, yet pass4success helped me time each section perfectly—believe in yourself and keep learning!
upvoted 0 times
...

Virgilio

3 months ago
Excited to share that I passed the exam. Pass4Success practice questions were a great resource. There was a question about Protocol Independent Routing and the use of route filters. I had to choose the correct filter configuration for a given scenario.
upvoted 0 times
...

Skye

3 months ago
Initial nerves about Junos specifics were real, but pass4success provided targeted drills that made answers feel natural; go for it, you're capable.
upvoted 0 times
...

Paul

3 months ago
Troubleshooting routing loops and slow convergence killed me at first; the practice exams showed how to isolate where the issue begins, and pass4success guided the steps.
upvoted 0 times
...

Noah

3 months ago
OSPF election behavior and route redistribution got me tangled; pass4success simulations exposed the common traps and gave me a clear path to the correct answers.
upvoted 0 times
...

Nelida

4 months ago
I felt overwhelmed by the breadth of topics, but Pass4Success mapped the topics clearly and boosted my confidence—keep pushing, you'll do great!
upvoted 0 times
...

Glory

4 months ago
The design and implementation of VRFs and route distinguishers were tough; the practice tests highlighted edge cases I would miss, and pass4success prep kept me confident.
upvoted 0 times
...

Celia

4 months ago
My hands shook during the first practice questions, but Pass4Success rehearsals steady my pace and deepen understanding; you'll pass with effort and belief!
upvoted 0 times
...

Wendell

4 months ago
I trembled at room noise and tricky questions, yet Pass4Success built my exam stamina and clarity, so go in ready to succeed—stay focused!
upvoted 0 times
...

Hortencia

5 months ago
I passed the exam, and the practice questions from Pass4Success were crucial. One challenging question was about configuring IPsec tunnels and their use cases. I wasn't entirely sure about the exact configuration commands, but I got through it.
upvoted 0 times
...

Heidy

5 months ago
Happy to announce that I passed the exam. The Pass4Success practice questions were very helpful. There was a question about Layer 2 Security features like port security and MAC address filtering. I had to choose the correct configuration steps, which was tricky.
upvoted 0 times
...

Sonia

5 months ago
Passing the Juniper Enterprise Routing and Switching, Specialist exam was a huge relief, thanks to Pass4Success. Focus on understanding the core concepts, not just memorizing.
upvoted 0 times
...

Margo

5 months ago
Layer 3 VPN concepts were brutal, especially the exact match criteria in Junos; Pass4Success helped me drill those cases until I could pick the right option under timing pressure.
upvoted 0 times
...

Alayna

6 months ago
The hardest part for me was mastering BGP route filtering and the tricky policy-based routing questions; Pass4Success practice exams walked me through each misstep and clarified which statements were true or false.
upvoted 0 times
...

Aaron

6 months ago
Pass4Success practice exams were a game-changer for me. Manage your time wisely and don't get bogged down on any single question.
upvoted 0 times
...

Kenny

6 months ago
I was nerve-wracked before the exam, but Pass4Success clarified the concepts and gave me structured practice, and now I'm confident to tackle any Juniper question—you've got this, future test-taker!
upvoted 0 times
...

Alex

6 months ago
I passed the exam, and Pass4Success practice questions were a big help. One question that puzzled me was about IS-IS adjacency formation and the different types of adjacencies. I had to identify the correct adjacency type for a given network scenario.
upvoted 0 times
...

Rosina

7 months ago
Thrilled to share that I passed the exam. The practice questions from Pass4Success were spot on. There was a question about Spanning Tree Protocol and the differences between STP, RSTP, and MSTP. I had to choose the correct protocol for a given network design.
upvoted 0 times
...

Tina

7 months ago
I did it! Passed the exam with the help of Pass4Success practice questions. One question that stumped me was about BGP route reflectors and their configuration. I wasn't sure about the exact commands needed to set up a route reflector, but I managed to pass.
upvoted 0 times
...

Nathalie

7 months ago
Success on the Juniper exam! Pass4Success's practice tests were crucial for my quick preparation.
upvoted 0 times
...

Helaine

7 months ago
Just passed the exam! The Pass4Success practice questions were a lifesaver. There was a tricky question about OSPF LSA types and their functions. I had to identify the correct LSA type for a given network scenario, which was challenging.
upvoted 0 times
...

Jeanice

9 months ago
Just got my Juniper certification! Pass4Success's questions were a perfect match for the real exam.
upvoted 0 times
...

Hyman

10 months ago
Passed the JNCIS-ENT exam with flying colors! Pass4Success's prep materials were invaluable.
upvoted 0 times
...

Carin

12 months ago
Juniper certification in the bag! Pass4Success's questions were nearly identical to the actual exam. Thank you!
upvoted 0 times
...

Linn

1 year ago
Aced the Juniper exam thanks to Pass4Success! Their materials were spot on and saved me weeks of study time.
upvoted 0 times
...

Leota

1 year ago
JNCIS-ENT exam conquered! Huge thanks to Pass4Success for the accurate practice questions.
upvoted 0 times
...

Kristofer

1 year ago
Just became Juniper certified! Pass4Success's exam prep was key to my success in such a short time.
upvoted 0 times
...

Irma

1 year ago
I passed the exam, and the practice questions from Pass4Success were very helpful. One question that I found difficult was about VLAN configuration and the differences between access and trunk ports. I had to choose the correct port settings for a given scenario.
upvoted 0 times
...

Dorothy

1 year ago
So relieved to have passed the Juniper routing and switching exam. Pass4Success, you guys rock!
upvoted 0 times
...

Carma

1 year ago
Excited to share that I passed the exam. Pass4Success practice questions were a great resource. There was a question about High Availability features like VRRP and GRES. I had to identify the correct failover mechanisms, which was a bit confusing.
upvoted 0 times
...

Judy

1 year ago
I passed the exam, and the practice questions from Pass4Success were crucial. One challenging question was about Protocol Independent Routing and the use of static routes versus dynamic routing protocols. I had to choose the best scenario for each, which was tough.
upvoted 0 times
...

Queen

1 year ago
Passed my Juniper exam today! Pass4Success's practice tests were incredibly similar to the real thing.
upvoted 0 times
...

Celeste

1 year ago
Happy to announce that I passed the exam. The Pass4Success practice questions were very helpful. There was a question about configuring GRE tunnels and their use cases. I wasn't entirely sure about the exact configuration commands, but I got through it.
upvoted 0 times
...

Nadine

1 year ago
Were there any questions on multicast routing?
upvoted 0 times
...

Annice

1 year ago
I passed the exam, and Pass4Success practice questions were a big help. One question that puzzled me was about Layer 2 Security features like DHCP snooping and ARP inspection. I had to choose the correct configuration steps, which was tricky.
upvoted 0 times
...

Iesha

1 year ago
JNCIS-ENT certification achieved! Couldn't have done it without Pass4Success. Their questions were a lifesaver.
upvoted 0 times
...

Rory

1 year ago
Did they test on any specific Junos OS features?
upvoted 0 times
...

Lezlie

1 year ago
Thrilled to share that I passed the exam. The practice questions from Pass4Success were spot on. There was a question about IS-IS network types and their corresponding metrics. I wasn't sure about the exact metric values for Level 1 and Level 2, but I managed to answer it.
upvoted 0 times
...

Roxane

2 years ago
Thanks for all the insights! Any final advice for those preparing?
upvoted 0 times
...

Layla

2 years ago
I did it! Passed the exam with flying colors. Thanks to Pass4Success, I was well-prepared. One question that caught me off guard was about the different types of Spanning Tree Protocols. I had to identify the differences between RSTP and MSTP, which was challenging.
upvoted 0 times
...

Colette

2 years ago
Wow, the Juniper exam was tough but I made it! Pass4Success really came through with relevant study material.
upvoted 0 times
...

Maurine

2 years ago
Just passed the exam! The practice questions from Pass4Success were invaluable. There was a tricky question about BGP path selection criteria. I had to choose the correct order of attributes like weight, local preference, and AS-path. I wasn't entirely confident, but I still passed.
upvoted 0 times
...

Queenie

2 years ago
How about WAN technologies? Any specific areas to focus on?
upvoted 0 times
...

Crista

2 years ago
My pleasure! Final advice: practice hands-on configs, understand troubleshooting methods, and use Pass4Success for targeted prep. You've got this!
upvoted 0 times
...

Keneth

2 years ago
I recently passed the Juniper Enterprise Routing and Switching, Specialist exam, and I must say, the Pass4Success practice questions were a great help. One question that stumped me was about configuring OSPF areas and their types. I wasn't sure about the difference between a stub area and a totally stubby area, but I managed to get through it.
upvoted 0 times
...

Herminia

2 years ago
Just passed the Juniper JNCIS-ENT exam! Thanks Pass4Success for the spot-on practice questions. Saved me so much time!
upvoted 0 times
...

Glory

2 years ago
Passing the Juniper Enterprise Routing and Switching, Specialist exam was a great achievement for me, thanks to the help of Pass4Success practice questions. The VLANs and STP topics were key for the exam, and I was able to describe their concepts and functionalities. One question that I recall from the exam was about the configuration steps for setting up VLANs in a network. I had some uncertainties about the process, but I still passed the exam.
upvoted 0 times
...

Terrilyn

2 years ago
My exam experience was successful as I passed the Juniper Enterprise Routing and Switching, Specialist exam. The RSTP concepts were essential for the exam, and I was able to identify the benefits and applications of this protocol. One question that I remember from the exam was about the functionalities of RSTP and how it differs from STP. I had some doubts about the specifics, but I still managed to pass the exam.
upvoted 0 times
...

Lazaro

2 years ago
Passed the Juniper exam with flying colors! Pass4Success's practice tests were a game-changer. Compressed my study time significantly.
upvoted 0 times
...

Fernanda

2 years ago
Successfully cleared JNCIS-ENT! Pass4Success provided amazingly accurate exam questions. Shortened my prep time immensely. Many thanks!
upvoted 0 times
...

Pamella

2 years ago
I passed the Juniper Enterprise Routing and Switching, Specialist exam with the help of Pass4Success practice questions. The VLANs and STP concepts were crucial for the exam, and I was able to demonstrate my knowledge in configuring and monitoring them. One question that stood out to me was related to the benefits of using VLANs in a network environment. I was a bit unsure of the answer, but I managed to pass the exam.
upvoted 0 times
...

Blondell

2 years ago
JNCIS-ENT certified! Pass4Success's exam questions were incredibly relevant. Couldn't have done it without their help. Thank you!
upvoted 0 times
...

Helaine

2 years ago
Security features were a significant part of the exam. Expect questions on firewall filters and policers. Study the difference between input and output filters, and understand how to apply them to interfaces. Pass4Success's exam dumps really helped me reinforce these concepts, allowing me to pass the exam with confidence!
upvoted 0 times
...

Kattie

2 years ago
Aced the Juniper Enterprise Routing and Switching exam today. Pass4Success's materials were crucial for my quick preparation. Grateful!
upvoted 0 times
...

Brynn

2 years ago
Just passed the JNCIS-ENT exam! Pass4Success's practice questions were spot-on and saved me weeks of prep time. Thanks!
upvoted 0 times
...

Free Juniper JN0-351 Exam Actual Questions

Note: Premium Questions for JN0-351 were last updated On Apr. 06, 2026 (see below)

Question #2

Exhibit

You have configured a GRE tunnel. To reduce the risk of dropping traffic, you have configured a keepalive OAM probe to monitor the state of the tunnel; however, traffic drops are still occurring.

Referring to the exhibit, what is the problem?

Reveal Solution Hide Solution
Correct Answer: D

A keepalive OAM probe is a mechanism that can be used to monitor the state of a GRE tunnel and detect any failures in the tunnel path. A keepalive OAM probe consists of sending periodic packets from one end of the tunnel to the other and expecting a reply.If no reply is received within a specified time, the tunnel is considered down and the line protocol of the tunnel interface is changed to down1.

To configure a keepalive OAM probe for a GRE tunnel, you need to specify two parameters: the keepalive-time and the hold-time. The keepalive-time is the interval between each keepalive packet sent by the local router.The hold-time is the maximum time that the local router waits for a reply from the remote router before declaring the tunnel down2.

According to the Juniper Networks documentation, the hold-time value must be two times the keepalive-time value for a GRE tunnel2. This is because the hold-time value must account for both the round-trip time of the keepalive packet and the processing time of the remote router. If the hold-time value is too small, it may cause false positives and unnecessary tunnel flaps.

In the exhibit, the configuration shows that the keepalive-time is set to 10 seconds and the hold-time is set to 15 seconds for the gr-1/1/10.1 interface. This means that the local router will send a keepalive packet every 10 seconds and will wait for 15 seconds for a reply from the remote router. However, this hold-time value is not two times the keepalive-time value, which violates the recommended configuration. This may cause traffic drops if the remote router takes longer than 15 seconds to reply.

Therefore, option D is correct, because the hold-time value must be two times the keepalive-time value for a GRE tunnel.Option A is incorrect, because BFD is not required for GRE tunnels; BFD is another protocol that can be used to monitor tunnels, but it is not compatible with GRE keepalives3.Option B is incorrect, because the ''event link-adjacency-loss'' option is not related to GRE tunnels; it is an option that can be used to trigger an action when a link goes down4.Option C is incorrect, because LLDP does not need to be removed from the gr-1/1/10.1 interface; LLDP is a protocol that can be used to discover neighboring devices and their capabilities, but it does not interfere with GRE tunnels5.


1:Configuring Keepalive Time and Hold time for a GRE Tunnel Interface2: keepalive | Junos OS | Juniper Networks3: Configuring Bidirectional Forwarding Detection4: event link-adjacency-loss | Junos OS | Juniper Networks5: Understanding Link Layer Discovery Protocol

Question #3

Which three protocols support BFD? (Choose three.)

Reveal Solution Hide Solution
Correct Answer: B, C, D

BFD is a protocol that can be used to quickly detect failures in the forwarding path between two adjacent routers or switches. BFD can be integrated with various routing protocols and link aggregation protocols to provide faster convergence and fault recovery.

According to the Juniper Networks documentation, the following protocols support BFD on Junos OS devices1:

BGP: BFD can be used to monitor the connectivity between BGP peers and trigger a session reset if a failure is detected.BFD can be configured for both internal and external BGP sessions, as well as for IPv4 and IPv6 address families2.

OSPF: BFD can be used to monitor the connectivity between OSPF neighbors and trigger a state change if a failure is detected.BFD can be configured for both OSPFv2 and OSPFv3 protocols, as well as for point-to-point and broadcast network types3.

LACP: BFD can be used to monitor the connectivity between LACP members and trigger a link state change if a failure is detected.BFD can be configured for both active and passive LACP modes, as well as for static and dynamic LAGs4.

Other protocols that support BFD on Junos OS devices are:

IS-IS: BFD can be used to monitor the connectivity between IS-IS neighbors and trigger a state change if a failure is detected. BFD can be configured for both level 1 and level 2 IS-IS adjacencies, as well as for point-to-point and broadcast network types.

RIP: BFD can be used to monitor the connectivity between RIP neighbors and trigger a route update if a failure is detected. BFD can be configured for both RIP version 1 and version 2 protocols, as well as for IPv4 and IPv6 address families.

VRRP: BFD can be used to monitor the connectivity between VRRP routers and trigger a priority change if a failure is detected. BFD can be configured for both VRRP version 2 and version 3 protocols, as well as for IPv4 and IPv6 address families.

The protocols that do not support BFD on Junos OS devices are:

RSTP: RSTP is a spanning tree protocol that provides loop prevention and rapid convergence in layer 2 networks. RSTP does not use BFD to detect link failures, but relies on its own hello mechanism that sends BPDU packets every 2 seconds by default.

FTP: FTP is an application layer protocol that is used to transfer files between hosts over a TCP connection. FTP does not use BFD to detect connection failures, but relies on TCP's own retransmission and timeout mechanisms.


1: [Configuring Bidirectional Forwarding Detection]2: [Configuring Bidirectional Forwarding Detection for BGP]3: [Configuring Bidirectional Forwarding Detection for OSPF]4: [Configuring Bidirectional Forwarding Detection for Link Aggregation Control Protocol] : [Configuring Bidirectional Forwarding Detection for IS-IS] : [Configuring Bidirectional Forwarding Detection for RIP] : [Configuring Bidirectional Forwarding Detection for VRRP] : [Understanding Rapid Spanning Tree Protocol] : [Understanding FTP]

Question #4

Which statement is correct about IP-IP tunnels?

Reveal Solution Hide Solution
Correct Answer: A

IP-IP tunnels are a type of tunnels that use IP as both the encapsulating and encapsulated protocol. IP-IP tunnels are simple and easy to configure, but they do not provide any security or authentication features. IP-IP tunnels only support encapsulating IP traffic, which means that the payload of the inner packet must be an IP packet.IP-IP tunnels cannot encapsulate non-IP traffic, such as Ethernet frames or MPLS labels1.

Option A is correct, because IP-IP tunnels only support encapsulating IP traffic. Option B is incorrect, because IP-IP tunnels only support encapsulating non-IP traffic. Option C is incorrect, because the TTL in the inner packet is not decremented during transit to the tunnel endpoint.The TTL in the outer packet is decremented by each router along the path, but the TTL in the inner packet is preserved until it reaches the tunnel endpoint2. Option D is incorrect, because there are 20 bytes of overhead with IP-IP encapsulation.The overhead consists of the header of the outer packet, which has a fixed size of 20 bytes for IPv43.


1:IP-IP Tunneling2:What is tunneling? | Tunneling in networking3: IPv4 - Header

Question #5

You are configuring an IS-IS IGP network and do not see the IS-IS adjacencies established. In this scenario, what are two reasons for this problem? (Choose two.)

Reveal Solution Hide Solution
Correct Answer: A, D

Option A suggests that the MTU is not at least 1492 bytes.This is correct because IS-IS requires a minimum MTU of 1492 bytes to establish adjacencies1.If the MTU is less than this, IS-IS adjacencies will not be established1.

Option D suggests that the lo0 interface is not included as an IS-IS interface.This is also correct because the loopback interface (lo0) is typically used as the router ID in IS-IS1.If the loopback interface is not included in IS-IS, it could prevent IS-IS adjacencies from being established1.

Therefore, options A and D are correct.


Explore Other Juniper Exams

Unlock Premium JN0-351 Exam Questions with Advanced Practice Test Features:
  • Select Question Types you want
  • Set your Desired Pass Percentage
  • Allocate Time (Hours : Minutes)
  • Create Multiple Practice tests with Limited Questions
  • Customer Support
Get Full Access Now

Save Cancel