Juniper Enterprise Routing and Switching, Specialist (JNCIS-ENT)

QUESTION NO: 1
You are an operator for a network running IS-IS. Two routers are failing to form an adjacency.
What are two reasons for this problem? (Choose two.)

A. The family iso configuration is missing from the adjacency interface. B. There are mismatched router IDs on the L2 routers. C. There is no configured ISO address on any IS-IS interface. D. There is a mismatched area ID between the L2 routers.

Correct Answer: A,C

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QUESTION NO: 2
Your network has two ISPs available. You want to ensure that all outbound traffic is routed out ISP-1. If the connection to ISP-1 fails, all outbound traffic is routed to the backup ISP, ISP-2. In this scenario, how should you configure BGP on your network?

A. Configure the gateway for ISP-1 with a higher peer ID than the gateway for ISP-2. B. Set the local-preference attribute to a higher value for ISP-2 than ISP-1. C. Set the local-preference attribute to a higher value for ISP-1 than ISP-2. D. Configure the gateway for ISP-1 with a higher origin code than the gateway for ISP-2.

Correct Answer: C

QUESTION NO: 3
You are verifying a new BGP peering session with an ISP. You issue the show bgp summary command, but the output shows the peer in the Active state. Which statement is correct in this scenario?

A. The session is idle and disabled. B. The session is established, and routing information is being exchanged. C. The session is waiting to be configured. D. The session is actively trying to establish a TCP connection.

Correct Answer: D

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QUESTION NO: 4
Which statement describes the additional overhead added when a packet is encapsulated in a GRE tunnel?

A. GRE adds 32 bytes of overhead to each packet. B. GRE adds 12 bytes of overhead to each packet. C. GRE adds 24 bytes of overhead to each packet. D. GRE adds 20 bytes of overhead to each packet.

Correct Answer: C

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QUESTION NO: 5
You are asked to create a default route that will be advertised to your internal OSPF neighbors.
You have three upstream connections to the Internet and you must ensure that when available, all traffic uses ISP1 as your primary connection and only uses ISP2 and ISP3 when ISP1 is not available. Which solution should you implement in this scenario?

A. Create a default generate route that includes an import policy to match BGP routes from ISP1 and assign a preference value of four or less. B. Create a default static route with ISP1's address as the next hop while specifying the addresses for ISP2 and ISP3 as qualified next hops with a preference value of six or higher. C. Create a default static route with each neighbor address as the next hop. D. Create a default aggregated route.

Correct Answer: B

QUESTION NO: 6
Which statement is true about IP-IP tunnels?

A. The packet is encapsulated unchanged before entering the tunnel. B. The packet header is replaced before entering the tunnel. C. IP-IP tunnels are protocol agnostic. D. The time-to-live value of the original packet is decremented.

Correct Answer: C

QUESTION NO: 7
You have configured an aggregate route for prefix 10.20.0.0/22 with three contributing routes:
10.20.0.0/24, 10.20.1.0/24, and 10.20.2.0/24. A packet arrives destined to 10.20.3.100. In this scenario, which action does the router take?

A. It forwards the packet using the next hop for the contributing route with the lowest preference. B. It silently drops the packet and does not send an ICMP network unreachable message to the source. C. It forwards the packet using the next hop defined for the aggregate route. D. It drops the packet and sends an ICMP network unreachable message to the source.

Correct Answer: D

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QUESTION NO: 8
Which statement concerning Bidirectional Forwarding Detection (BFD) is true for the configuration shown in the exhibit?

A. The effective interval for neighbor 172.30.1.2 is 500 ms. B. The minimum-interval must match on both ends. C. The effective interval for neighbor 192.168.100.2 is 500 ms. D. The link to neighbor 192.168.100.2 is not using BFD.

Correct Answer: C

QUESTION NO: 9
Two routers share the same highest priority and start time. In this situation, what is evaluated next when determining the designated router?

A. The routers perform another DR election. B. The router with the highest MAC address become the DR C. The router with the highest router ID becomes the DR D. The router with the lowest router ID become the DR.

Correct Answer: C

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QUESTION NO: 10
Which mechanism is used to share routes between routing tables?

A. forwarding instances B. routing instances C. filter-based forwarding D. RIB groups

Correct Answer: D

QUESTION NO: 11
Referring to the exhibit, Router-1 and Router-2 are failing to form an IS-IS adjacency.

What should you do to solve the problem?

A. Change the IP subnet masks to match on the ge-0/0/2 interfaces of both routers. B. Remove the ISO address from ge-0/0/2 on Router-1. C. Remove the overloaded statement from Router-1. D. Change the ISO areas on the lo0 interfaces to match on both routers.

Correct Answer: B

QUESTION NO: 12
You need to block SSH (TCP port 22) traffic from the 192.168.10.0/24 network. Which firewall filter term is correct in this scenario?

A. term block-ssh { from { source-address 192.168.10.0/24; service ssh; } then reject; } B. term block-ssh { from { source-address 192.168.10.0/24; protocol tcp; destination-port 22; } then discard; } C. term block-ssh { from { destination-address 192.168.10.0/24; protocol tcp; destination-port 22; } then discard; } D. term block-ssh { from { source-address 192.168.10.0/24; protocol tcp; source-port 22; } then discard; }

Correct Answer: B

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QUESTION NO: 13
Referring to the exhibit, why is this OSPF adjacency remaining in this state?

A. A subnet mask mismatch exists between the OSPF neighbors. B. An MTU mismatch exists between the OSPF neighbors. C. A hello interval mismatch exists between the OSPF neighbors. D. An area ID mismatch exists between the OSPF neighbors

Correct Answer: B

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Juniper Enterprise Routing and Switching, Specialist (JNCIS-ENT) - JN0-352 Exam Questions