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  • 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: Jan. 20, 2025)
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.
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Kristofer

2 days ago
Just became Juniper certified! Pass4Success's exam prep was key to my success in such a short time.
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Irma

7 days 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
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Dorothy

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

1 months 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
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Judy

2 months 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
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Queen

2 months ago
Passed my Juniper exam today! Pass4Success's practice tests were incredibly similar to the real thing.
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Celeste

2 months 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
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Nadine

2 months ago
Were there any questions on multicast routing?
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Annice

3 months 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
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Iesha

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

3 months ago
Did they test on any specific Junos OS features?
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Lezlie

3 months 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.
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Roxane

4 months ago
Thanks for all the insights! Any final advice for those preparing?
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Layla

4 months 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
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Colette

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

4 months 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
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Queenie

4 months ago
How about WAN technologies? Any specific areas to focus on?
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Crista

5 months 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
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Keneth

5 months 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
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Herminia

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

5 months 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
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Terrilyn

6 months 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
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Lazaro

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

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

7 months 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
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Blondell

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

7 months 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!
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Kattie

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

8 months 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
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Free Juniper JN0-351 Exam Actual Questions

Note: Premium Questions for JN0-351 were last updated On Jan. 20, 2025 (see below)

Question #1

You are an operator for a network running 1S-IS. Two routers are failing to form an adjacency. What are two reasons for this problem? (Choose two.)

Reveal Solution Hide Solution
Correct Answer: B, D

The two reasons for the failure to form an adjacency in a network running IS-IS could be:

B) There is no configured ISO address on any IS-IS interface.IS-IS requires each router interface to have an ISO address configured.Without this address, the routers cannot form an adjacency1.

D) The family iso configuration is missing from the adjacency interface.The 'family iso' configuration is essential for IS-IS to function correctly.If this configuration is missing from the adjacency interface, it could prevent the formation of an adjacency1.

These explanations are based on the Enterprise Routing and Switching Specialist (JNCIS-ENT) documents and learning resources available at Juniper Networks23.


Question #2

Which statement is correct about the storm control feature?

Reveal Solution Hide Solution
Correct Answer: A

Option A is correct.The storm control feature is enabled in the factory-default configuration on EX Series switches12.On EX2200, EX3200, EX3300, EX4200, and EX6200 switches, the factory default configuration enables storm control for broadcast and unknown unicast traffic on all switch interfaces2.On EX4300 switches, the factory default configuration enables storm control on all Layer 2 switch interfaces1.

Option B is incorrect.The storm control feature does not require a special license on EX Series switches34.

Option C is incorrect. There's no information available that suggests the storm control feature is not supported on aggregate Ethernet interfaces.

Option D is incorrect.The storm control configuration applies to traffic at the ingress of an interface5, not just between the forwarding and control plane.


Question #3

You are an operator for a network running 1S-IS. Two routers are failing to form an adjacency. What are two reasons for this problem? (Choose two.)

Reveal Solution Hide Solution
Correct Answer: B, D

The two reasons for the failure to form an adjacency in a network running IS-IS could be:

B) There is no configured ISO address on any IS-IS interface.IS-IS requires each router interface to have an ISO address configured.Without this address, the routers cannot form an adjacency1.

D) The family iso configuration is missing from the adjacency interface.The 'family iso' configuration is essential for IS-IS to function correctly.If this configuration is missing from the adjacency interface, it could prevent the formation of an adjacency1.

These explanations are based on the Enterprise Routing and Switching Specialist (JNCIS-ENT) documents and learning resources available at Juniper Networks23.


Question #5

You have DHCP snooping enabled but no entries are automatically created in the snooping database for an interface on your EX Series switch. What are two reasons for the problem? (Choose two.)

Reveal Solution Hide Solution
Correct Answer: B, C

The DHCP snooping feature in Juniper Networks' EX Series switches works by building a binding database that maps the IP address, MAC address, lease time, binding type, VLAN number, and interface information1.This database is used to filter and validate DHCP messages from untrusted sources1.

However, there are certain conditions that could prevent entries from being automatically created in the snooping database for an interface:

MAC limiting: If MAC limiting is enabled on the interface, it could potentially interfere with the operation of DHCP snooping.MAC limiting restricts the number of MAC addresses that can be learned on a physical interface to prevent MAC flooding attacks1. This could inadvertently limit the number of DHCP clients that can be learned on an interface, thus preventing new entries from being added to the DHCP snooping database.

Static IP address: If the device connected to the interface is configured with a static IP address, it will not go through the DHCP process and therefore will not have an entry in the DHCP snooping database1.The DHCP snooping feature relies on monitoring DHCP messages to build its database1, so devices with static IP addresses that do not send DHCP messages will not have their information added.

Therefore, options B and C are correct.Options A and D are not correct because performing a DHCPRELEASE would simply remove an existing entry from the database1, and Dynamic ARP inspection (DAI) uses the information stored in the DHCP snooping binding database but does not prevent entries from being created1.


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