Juniper JN0-351 Practice Test - Free Updated Demo (2026)

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Juniper JN0-351 Exam Syllabus Topics:

TopicDetails
Topic 1
  • 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 2
  • 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.
Topic 3
  • 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 4
  • 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 5
  • Spanning Tree: Networking professionals explore the principles and advantages of the Spanning Tree Protocol (STP) to ensure loop-free topologies in Layer 2 networks.

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Juniper Enterprise Routing and Switching, Specialist (JNCIS-ENT) Sample Questions (Q57-Q62):

NEW QUESTION # 57
Based on the output shown in the exhibit, which statement is correct?

Answer: B


NEW QUESTION # 58
Which statement is correct about graceful Routing Engine switchover (GRES)?

Answer: B


NEW QUESTION # 59
Which two types of tunnels are able to be created on all Junos devices? (Choose two.)

Answer: A,C

Explanation:
Junos devices support various types of tunnels for different purposes 1 2 .
* Option B is correct. Generic Routing Encapsulation (GRE) is a tunneling protocol that can encapsulate a wide variety of network layer protocols inside virtual point-to-point links over an Internet Protocol network 1 . Junos devices support GRE tunnels 1 .
* Option D is correct. IPsec (Internet Protocol Security) is a protocol suite for securing Internet Protocol (IP) communications by authenticating and encrypting each IP packet of a communication session 1
. Junos devices support IPsec tunnels 1 .
* Option A is incorrect. Spanning Tree Protocol (STP) is not a type of tunnel. It's a network protocol designed to prevent loops in a bridged Ethernet local area network 2 .
* Option C is incorrect. While Junos devices do support IP-IP (also known as IP tunneling), it's not supported on all Junos devices 1 .


NEW QUESTION # 60
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?

Answer: B

Explanation:
* The exhibit shows the configuration of BFD liveness detection for BGP at the global level, which applies to all BGP neighbors by default 1 . However, this configuration does not specify the session mode, which determines whether BFD uses single-hop or multihop mode to communicate with a neighbor 2 .
* 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 multihop 2 .
* 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 level 2 . 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 neighbor 2 . This will prevent BGP from using BFD to detect liveliness and failover.
* Therefore, the answer B is correct, as you need to configure the BFD liveness detection on the BGP neighbor level with the appropriate session mode for multihop neighbors.


NEW QUESTION # 61
Which statement correctly describes the purpose of Bidirectional Forwarding Detection (BFD) in Junos OS?

Answer: B

Explanation:
Bidirectional Forwarding Detection (BFD) is a lightweight protocol used to rapidly detect failures in the forwarding path between two adjacent devices, typically much faster than a routing protocol's native hello/dead timer mechanism. BFD can be associated with multiple routing protocols, such as OSPF, BGP, and static routes, to trigger faster reconvergence upon detecting a failure.


NEW QUESTION # 62
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