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Juniper JN0-351 Exam Syllabus Topics:

Topic	Details
Topic 1	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 2	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 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	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 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.

Juniper Enterprise Routing and Switching, Specialist (JNCIS-ENT) Sample Questions (Q34-Q39):

NEW QUESTION # 34
A number of reports from end users indicate that internal and external communications are intermittent and not reliable. You verified the status of the switch ports and have determined that they are up and operational. You also noticed a very high level of link bandwidth utilization on those same ports. The current topology of the affected environment is shown in the exhibit.

What would be the cause of the reported issues?

A. A malformed route-based ACL improperly filtering traffic flows.
B. A lack of port-based ACLs filtering the traffic flows.
C. A lack of a loop-prevention mechanism or protocol.
D. A misconfigured interior gateway protocol (IGP).

Answer: C

NEW QUESTION # 35
Which two statements are correct about tunnels? (Choose two.)

A. IP-IP tunnels are stateful.
B. Tunnels add additional overhead to packet size.
C. Tunnel endpoints must have a valid route to the remote tunnel endpoint.
D. BFD cannot be used to monitor tunnels.

Answer: B,C

Explanation:
For a tunnel to be established, the endpoints must have a route to each other. This is essential for the encapsulated packets to reach their destination.
Tunnels encapsulate packets, adding extra headers for the encapsulation protocol, which increases the overall packet size.

NEW QUESTION # 36
Which statement is correct about graceful Routing Engine switchover (GRES)?

A. With no other high availability features enabled, routing is preserved and the new master RE does not restart rpd.
B. The PFE restarts and the kernel and interface information is lost.
C. GRES has a helper mode and a restarting mode.
D. When combined with NSR, routing is preserved and the new master RE does not restart rpd.

Answer: D

Explanation:
Explanation
The Graceful Routing Engine Switchover (GRES) feature in Junos OS enables a router with redundant Routing Engines to continue forwarding packets, even if one Routing Engine fails1. GRES preserves interface and kernel information, ensuring that traffic is not interrupted1. However, GRES does not preserve the control plane1.
To preserve routing during a switchover, GRES must be combined with either Graceful Restart protocol extensions or Nonstop Active Routing (NSR)1. When GRES is combined with NSR, nearly 75 percent of line rate worth of traffic per Packet Forwarding Engine remains uninterrupted during GRES1. Any updates to the primary Routing Engine are replicated to the backup Routing Engine as soon as they occur1.
Therefore, when GRES is combined with NSR, routing is preserved and the new master RE does not restart rpd1.

NEW QUESTION # 37
Which command displays the output shown in the exhibit?

A. show ethernet-switching table extensive
B. show route forwarding-table family ethernet-switching
C. show ethernet-switching table
D. show route forwarding-table

Answer: C

Explanation:
This command shows the Ethernet switching table, which includes information about MAC addresses, their associated VLANs, and the interfaces they are learned on, similar to the output shown in your exhibit.

NEW QUESTION # 38
Which statement is correct about GRE tunnels?

A. GRE tunnels only support encapsulating IP traffic.
B. There are 20 bytes of overhead with GRE encapsulation.
C. The time-to-live field in the tunnel payload is decremented during transit.
D. GRE tunnels only support encapsulating non-IP traffic.

Answer: C

NEW QUESTION # 39
......

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Reliable JN0-351 Guide Dumps: Enterprise Routing and Switching, Specialist (JNCIS-ENT) - JN0-351 Test Prep Materials - TestPDF

Vce JN0-351 Exam & JN0-351 Latest Braindumps Free

Juniper JN0-351 Exam Syllabus Topics:

Juniper Enterprise Routing and Switching, Specialist (JNCIS-ENT) Sample Questions (Q34-Q39):

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