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Pass-Sure Free JN0-351 Practice & Leading Offer in Qualification Exams & Marvelous JN0-351: Enterprise Routing and Switching, Specialist (JNCIS-ENT)

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Juniper JN0-351 Exam Syllabus Topics:

Topic
Details

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

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

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 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.

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Juniper Enterprise Routing and Switching, Specialist (JNCIS-ENT) Sample Questions (Q63-Q68):

NEW QUESTION # 63
Which statement is correct about controlling the routes installed by a RIB group?

A. Only routes in the last table are installed.
B. A firewall filter must be configured to install routes in the RIB groups.
C. An import policy is applied to the RIB group.
D. An export policy is applied to the RIB group.

Answer: C

Explanation:
When routes are placed into a RIB group, an import policy can be applied to determine which routes are accepted into that group. This policy helps in controlling which routes get installed or filtered into the RIB group from various sources like other routing protocols or static routes.
https://www.juniper.net/documentation/us/en/software/junos/static-routing/topics/ref/statement/rib- groups-edit-routing-options.html

NEW QUESTION # 64
Which two types of tunnels are able to be created on all Junos devices? (Choose two.)

A. IPsec
B. GRE
C. STP
D. IP-IP

Answer: A,B

Explanation:
Explanation
Junos devices support various types of tunnels for different purposes12.
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 network1. Junos devices support GRE tunnels1.
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 session1. Junos devices support IPsec tunnels1.
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 network2.
Option C is incorrect. While Junos devices do support IP-IP (also known as IP tunneling), it's not supported on all Junos devices1.

NEW QUESTION # 65
Your GRE tunnel is not transitioning to the Upstatus. What would be the first step in troubleshooting the problem?

A. Verify the status of the management routing instance.
B. Verify that the routing instance for GRE tunnels is created.
C. Verify that the status of the management interface is up.
D. Verify tunnel endpoint reachability.

Answer: D

NEW QUESTION # 66
You want to ensure traffic is routed through a GRE tunnel. In this scenario, which two statements will satisfy this requirement? (Choose two.)

A. All intermediary devices must have a route to the tunnel endpoints.
B. Tunnel endpoints must have a route that directs traffic into the tunnel.
C. BFD must be used on the stateless tunneling protocols.
D. Keepalives must be used on stateless tunneling protocols.

Answer: A,B

Explanation:
Option A is correct. For traffic to be sent through a GRE tunnel, there must be a route that directs the traffic into the tunnel. This is typically accomplished through the use of a static route or a dynamic routing protocol.
Option B is correct. All intermediary devices must have a route to the tunnel endpoints. In real- world scenarios, the tunnel endpoints for a tunnel going over the Internet must have globally reachable internet addresses. Otherwise, intermediate routers in the Internet cannot forward the tunneled packets.

NEW QUESTION # 67
You want to enable redundancy for the EBGP peering between the two routers shown in the exhibit.
Which three actions will you perform in this scenario? (Choose three.)

A. Configure an MD5 peer authentication.
B. Configure BGP multihop.
C. Configure loopback interface peering.
D. Configure routes for the peer loopback interface IP addresses.
E. Configure a cluster ID.

Answer: B,C,D

Explanation:
A is correct because you need to configure BGP multihop to enable redundancy for the EBGP peering between the two routers. BGP multihop is a feature that allows BGP peers to establish a session over multiple hops, instead of requiring them to be directly connected. By default, EBGP peers use a time-to-live (TTL) value of 1 for their packets, which means that they can only reach adjacent neighbors. However, if you configure BGP multihop with a higher TTL value, you can allow EBGP peers to communicate over multiple routers in between. This can provide redundancy in case of a link failure or a router failure between the EBGP peers.
B is correct because you need to configure loopback interface peering to enable redundancy for the EBGP peering between the two routers. Loopback interface peering is a technique that uses loopback interfaces as the source and destination addresses for BGP sessions, instead of physical interfaces. Loopback interfaces are virtual interfaces that are always up and reachable as long as the router is operational. By using loopback interface peering, you can avoid the dependency on a single physical interface or link for the BGP session, and use multiple paths to reach the loopback address of the peer. This can provide redundancy and load balancing for the EBGP peering.
C is correct because you need to configure routes for the peer loopback interface IP addresses to enable redundancy for the EBGP peering between the two routers. Routes for the peer loopback interface IP addresses are necessary to ensure that the routers can reach each other's loopback addresses over multiple hops. You can use static routes or dynamic routing protocols to advertise and learn the routes for the peer loopback interface IP addresses. Without these routes, the routers will not be able to establish or maintain the BGP session using their loopback interfaces.

NEW QUESTION # 68
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