JN0-351시험대비덤프데모문제다운 - JN0-351최신시험공부자료

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Juniper JN0-351 시험요강:

주제소개
주제 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.
주제 2
  • 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.
주제 3
  • BGP: This topic focuses on the operational and conceptual elements of BGP, a cornerstone in enterprise networks.
주제 4
  • Spanning Tree: Networking professionals explore the principles and advantages of the Spanning Tree Protocol (STP) to ensure loop-free topologies in Layer 2 networks.
주제 5
  • 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.

>> JN0-351시험대비 덤프데모문제 다운 <<

JN0-351최신 시험 공부자료 & JN0-351시험패스

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최신 JNCIS-ENT JN0-351 무료샘플문제 (Q73-Q78):

질문 # 73
What is the default keepalive time for BGP?

정답：A

설명：
Default BGP keepalive timer in Junos is 30 seconds
The default keepalive time for BGP is 30 seconds, which means that BGP peers send keepalive messages to each other every 30 seconds to verify the liveness of the BGP session. If no keepalive message is received from a peer within the hold time, which is 90 seconds by default, the peer is considered to be unavailable and the BGP session is closed. The keepalive time and the hold time can be configured manually for each BGP peer or peer group, but they must match on both ends of the BGP session. The keepalive time should be one third of the hold time for optimal performance. Therefore, option C is correct and the other options are incorrect. References: BGP keepalive messages and hold time - Juniper Networks


질문 # 74
What are two reasons for creating multiple areas in OSPF? (Choose two.)

정답：C,D

설명：
Option A is correct. Creating multiple areas in OSPF can help to reduce the convergence time .
This is because changes in one area do not affect other areas, so fewer routers need to run the SPF algorithm in response to a change.
Option D is correct. Creating multiple areas in OSPF can help to reduce Link State Advertisement (LSA) flooding across the network. This is because LSAs are not flooded out of their area of origin.


질문 # 75
Exhibit

Referring to the exhibit, which statement is correct?

정답：D

설명：
In a Rapid Spanning Tree Protocol (RSTP) topology, the root bridge is determined by the switch with the lowest bridge priority value 1 2 . If all switches have the same priority, then the root bridge is assigned to the switch whose MAC address's hex value is the lowest 2 . The default bridge priority value is 32768 3 2 .
However, without the actual exhibit, it's difficult to definitively determine which device is the root bridge. But based on the options provided, if we assume that the local device has a lower bridge priority or a lower MAC address than other devices in the network, then it could be considered as the root bridge for this RSTP topology 4 5 .


질문 # 76
In addition to the MAC addresses, what information is stored in the bridging table? (Choose two.)

정답：B,C

설명：
The bridging table is a data structure that stores the MAC addresses and the associated interface details and MAC learned time for each MAC address. The bridging table is used by the switch to forward frames based on the destination MAC address. The ether type details and the preamble of Ethernet packet are not stored in the bridging table, as they are not relevant for the switching process. References:
* Enterprise Routing and Switching, Specialist (JNCIS-ENT) - Juniper Networks
* Enterprise Routing and Switching, Specialist (JNCIS-ENT) - Juniper Networks
* [Junos OS Layer 2 Configuration Guide - TechLibrary - Juniper Networks]
* [Junos OS Layer 2 Configuration Guide - TechLibrary - Juniper Networks]


질문 # 77
In RSTP, which three port roles are associated with the discarding state? (Choose three.)

정답：B,D,E

설명：
In Rapid Spanning Tree Protocol (RSTP), there are several port roles that determine the behavior of the port in the spanning tree 1 2 3 . The roles include root, designated, alternate, backup, and disabled 1 2 3 .
The discarding state is associated with the backup, alternate, and disabled roles 1 2 3 . In a stable topology with consistent port roles throughout the network, RSTP ensures that every root port and designated port immediately transition to the forwarding state while all alternate and backup ports are always in the discarding state 2 . Disabled ports are also in the discarding state 3 .
Therefore, options B, C, and D are correct.


질문 # 78
......

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