Certification JN0-351 Exam - JN0-351 Exam Guide

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Juniper JN0-351 Exam Syllabus Topics:

TopicDetails
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
  • 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 3
  • 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 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
  • 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 6
  • BGP: This topic focuses on the operational and conceptual elements of BGP, a cornerstone in enterprise networks.

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Real Juniper JN0-351 Questions - Tips And Tricks To Pass Exam

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Juniper Enterprise Routing and Switching, Specialist (JNCIS-ENT) Sample Questions (Q93-Q98):

NEW QUESTION # 93
In the exhibit, each IP subnet in the campus environment is associated with a unique VLAN ID.

Which action will ensure that Host C will communicate with Host A and Host B?

Answer: B


NEW QUESTION # 94
Which two statements about MACsec are true? (Choose two.)

Answer: B,C


NEW QUESTION # 95
Which statement is correct about the IS-IS ISO NET address?

Answer: C

Explanation:
An ISO NET address is a type of network address used by the IS-IS routing protocol. It identifies a point of connection to the network, such as a router interface, and is also called a Network Service Access Point (NSAP)1.
An ISO NET address consists of three parts: an area ID, a system ID, and a selector2. The area ID identifies the IS-IS area to which the device belongs. The system ID uniquely identifies the device within the area. The selector identifies a specific service or function on the device, such as routing or management2.
An ISO NET address must be unique for each device in the network, because it is used by IS-IS to establish adjacencies, exchange routing information, and compute shortest paths2. If two devices have the same ISO NET address, they will not be able to communicate with each other or with other devices in the network. Therefore, it is important to assign different ISO NET addresses to each device in the network.


NEW QUESTION # 96
Which two statements are correct about OSPF area types? (Choose two.)

Answer: B,D

Explanation:
A stub area blocks Type 5 external LSAs from being flooded into it, relying instead on a default route to reach external destinations. A not-so-stubby area (NSSA) is a variation that allows external routes to be imported locally as Type 7 LSAs, which the Area Border Router (ABR) then translates into Type 5 LSAs for propagation into the backbone.


NEW QUESTION # 97
Exhibit.

Which router will become the OSPF BDR if all routers are powered on at the same time?

Answer: C

Explanation:
Explanation
OSPF DR/BDR election is a process that occurs on multi-access data links. It is intended to select two OSPF nodes: one to be acting as the Designated Router (DR), and another to be acting as the Backup Designated Router (BDR).The DR and BDR are responsible for generating network LSAs for the multi-access network and synchronizing the LSDB with other routers on the same network1.
The DR/BDR election is based on two criteria: the OSPF priority and the router ID. The OSPF priority is a value between 0 and 255 that can be configured on each interface participating in OSPF. The default priority is
1. A priority of 0 means that the router will not participate in the election and will never become a DR or BDR. The router with the highest priority will become the DR, and the router with the second highest priority will become the BDR. If there is a tie in priority, then the router ID is used as a tie-breaker. The router ID is a
32-bit number that uniquely identifies each router in an OSPF domain.It can be manually configured or automatically derived from the highest IP address on a loopback interface or any active interface2.
In this scenario, all routers have the same priority of 1, so the router ID will determine the outcome of the election. The router IDs are shown in the exhibit as RID values. The highest RID belongs to R4 (10.10.10.4), so R4 will become the DR. The second highest RID belongs to R3 (10.10.10.3), so R3 will become the BDR.
References:
1:OSPF DR/BDR Election: Process, Configuration, and Tuning2:OSPF Designated Router (DR) and Backup Designated Router (BDR)


NEW QUESTION # 98
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