JN0-351시험패스 & JN0-351 100％시험패스덤프자료

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Juniper JN0-351 시험요강:

주제	소개
주제 1	BGP: This topic focuses on the operational and conceptual elements of BGP, a cornerstone in enterprise networks.
주제 2	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.
주제 3	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 4	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.
주제 5	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 6	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 7	Protocol Independent Routing: An essential domain for understanding routing components outside protocol dependencies, this topic enhances expertise in configuring, monitoring, and troubleshooting critical elements.
주제 8	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.

>> JN0-351시험패스 <<

실제 JN0-351 시험덤프, JN0-351 기출문제, 유효한 JN0-351 덤프자료

Juniper인증 JN0-351시험패스는 IT업계종사자들이 승진 혹은 연봉협상 혹은 이직 등 보든 면에서 날개를 가해준것과 같습니다.IT업계는 Juniper인증 JN0-351시험을 패스한 전문가를 필요로 하고 있습니다. PassTIP의Juniper인증 JN0-351덤프로 시험을 패스하고 자격증을 취득하여 더욱더 큰 무대로 진출해보세요.

최신 JNCIS-ENT JN0-351 무료샘플문제 (Q42-Q47):

질문 # 42
Which two mechanisms are part of building and maintaining a Layer 2 bridge table? (Choose two.)

A. flooding
B. listening
C. learning
D. blocking

정답：A,C

설명：
Transparent bridging uses five mechanisms to create and maintain Ethernet switching tables on the switch:
- Learning
- Forwarding
- Flooding
- Filtering
- Aging

질문 # 43
Which statement about aggregate routes is correct?

A. Aggregate routes are used for advertising summarized network prefixes.
B. Aggregate routes can only be used for static routing but not for dynamic routing protocols.
C. Aggregate routes are automatically generated for all of the subnets in a routing table.
D. Aggregate routes are always preferred over more specific routes, even when the specific routes have a better path.

정답：A

설명：
Aggregate routes are used for advertising summarized network prefixes. They help minimize the number of routing tables in an IP network by consolidating selected multiple routes into a single route advertisement. This approach is in contrast to non-aggregation routing, in which every routing table contains a unique entry for each route.
Therefore, option D is correct. Options A, B, and C are not correct because:
Aggregate routes can be used with both static routing and dynamic routing protocols. Aggregate routes are not automatically generated for all of the subnets in a routing table. They need to be manually configured.
Aggregate routes are not always preferred over more specific routes. The route selection process in Junos OS considers several factors, including route preference and metric, before determining the active route.

질문 # 44
After receiving a BGP route, which two conditions are verified by the receiving router to ensure that the received route is valid? (Choose two)

A. The local preference is greater than 0.
B. The loops do not exist.
C. The AS-path length is greater than 0.
D. The next hop is reachable.

정답：B,D

설명：
B is correct because the loops do not exist is one of the conditions that are verified by the receiving router to ensure that the received BGP route is valid. A loop in BGP means that a route has been advertised by the same AS more than once, which can cause routing instability and inefficiency1. To prevent loops, BGP uses the AS-path attribute, which lists the AS numbers that a route has traversed from the origin to the destination2. The receiving router checks the AS-path attribute of the received route and discards it if it finds its own AS number in the list2. This way, BGP avoids accepting routes that contain loops.
C is correct because the next hop is reachable is one of the conditions that are verified by the receiving router to ensure that the received BGP route is valid. The next hop is the IP address of the next router that is used to forward packets to the destination network3. The receiving router checks the next hop attribute of the received route and verifies that it has a valid route to reach it3. If the next hop is not reachable, the received route is not usable and is rejected by the receiving router3. This way, BGP ensures that only feasible routes are accepted.

질문 # 45
A recent security audit indicates that peer-to-peer applications are allowed on the guest VLAN and employees may have been using the guest VLAN for this purpose. You deploy the configuration shown in the exhibit, but it does not stop the peer-to-peer traffic.

In this scenario, what must you do to implement the security policy?

A. Implement 802.1X on the guest VLAN
B. Deploy storm control to block unknown unicast traffic
C. Attach the filter to the VLAN
D. Use persistent MAC learning

정답：C

질문 # 46
Exhibit

You have configured a GRE tunnel. To reduce the risk of dropping traffic, you have configured a keepalive OAM probe to monitor the state of the tunnel; however, traffic drops are still occurring.
Referring to the exhibit, what is the problem?

A. LLDP needs to be removed from the gr-1/1/10.1 interface.
B. The hold-time value must be two times the keepalive-time value
C. The " event link-adjacency-loss " option must be set.
D. For GRE tunnels, the OAM protocol requires that the BFD protocols also be used.

정답：B

설명：
A keepalive OAM probe is a mechanism that can be used to monitor the state of a GRE tunnel and detect any failures in the tunnel path. A keepalive OAM probe consists of sending periodic packets from one end of the tunnel to the other and expecting a reply. If no reply is received within a specified time, the tunnel is considered down and the line protocol of the tunnel interface is changed to down 1 .
To configure a keepalive OAM probe for a GRE tunnel, you need to specify two parameters: the keepalive- time and the hold-time. The keepalive-time is the interval between each keepalive packet sent by the local router. The hold-time is the maximum time that the local router waits for a reply from the remote router before declaring the tunnel down 2 .
According to the Juniper Networks documentation, the hold-time value must be two times the keepalive-time value for a GRE tunnel 2 . This is because the hold-time value must account for both the round-trip time of the keepalive packet and the processing time of the remote router. If the hold-time value is too small, it may cause false positives and unnecessary tunnel flaps.
In the exhibit, the configuration shows that the keepalive-time is set to 10 seconds and the hold-time is set to
15 seconds for the gr-1/1/10.1 interface. This means that the local router will send a keepalive packet every 10 seconds and will wait for 15 seconds for a reply from the remote router. However, this hold-time value is not two times the keepalive-time value, which violates the recommended configuration. This may cause traffic drops if the remote router takes longer than 15 seconds to reply.
Therefore, option D is correct, because the hold-time value must be two times the keepalive-time value for a GRE tunnel. Option A is incorrect, because BFD is not required for GRE tunnels; BFD is another protocol that can be used to monitor tunnels, but it is not compatible with GRE keepalives 3 . Option B is incorrect, because the "event link-adjacency-loss" option is not related to GRE tunnels; it is an option that can be used to trigger an action when a link goes down 4 . Option C is incorrect, because LLDP does not need to be removed from the gr-1/1/10.1 interface; LLDP is a protocol that can be used to discover neighboring devices and their capabilities, but it does not interfere with GRE tunnels 5 .
References:
1 : Configuring Keepalive Time and Hold time for a GRE Tunnel Interface 2 : keepalive | Junos OS | Juniper Networks 3 : Configuring Bidirectional Forwarding Detection 4 : event link-adjacency-loss | Junos OS | Juniper Networks 5 : Understanding Link Layer Discovery Protocol

질문 # 47
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JN0-351 100％시험패스 덤프자료: https://www.passtip.net/JN0-351-pass-exam.html

참고: PassTIP에서 Google Drive로 공유하는 무료, 최신 JN0-351 시험 문제집이 있습니다: https://drive.google.com/open?id=1c231eyoUbRRFszuUggrYOIaVsAkcQ_Fx