Enterprise Routing and Switching, Specialist (JNCIS-ENT)

Question 1

Based on the traceoptions output shown in the exhibit, what is the problem with the adjacency?

A. MTU mismatch

B. authentication mismatch

C. area mismatch

D. connectivity

Correct Answer: C

Question 2

Which IS-IS PDU should be used by a router to list all LSPs that it believes should exist in the link-state database?

A. PSNP

B. IIH

C. CSNP

D. LSP

Correct Answer: C

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Question 3

Click the Exhibit button. You are asked to ensure that there will not be any unwanted STP topology changes affecting your root bridge placement because a rogue switch was introduced into the network at the access layer. Referring to the exhibit, which interfaces will need to have root protection applied to accomplish this task?

A. Place root protection on ge-0/0/6 and ge-0/0/8 on Switch-1 and Switch-2.

B. Place root protection on ge-0/0/6 and ge-0/0/8 on Switch-1 only.

C. Place root protection on ge-0/0/6 and ge-0/0/8 on Switch-3 and Switch-4.

D. Place root protection on ge-0/0/12 and ge-0/0/13 on Switch-1 and Switch-2.

Correct Answer: A

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Question 4

Refer to Exhibit:

R1 is not responding to ICMP requests sent to the VIP address.
Referring to the exhibit, which command option would you configure on the virtual address to correct this problem?

A. accept-data

B. track

C. advertise-interval

D. no-preempt

Correct Answer: A

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Question 5

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. Deploy storm control to block unknown unicast traffic

B. Attach the filter to the VLAN

C. Use persistent MAC learning

D. Implement 802.1X on the guest VLAN

Correct Answer: B

Question 6

Which statement is correct about IP-IP tunnels?

A. IP-IP tunnels only support encapsulating IP traffic.

B. IP-IP tunnels only support encapsulating non-IP traffic.

C. The TTL in the inner packet is decremented during transit to the tunnel endpoint.

D. There are 24 bytes of overhead with IP-IP encapsulation.

Correct Answer: A

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Question 7

What are two interarea OSPF LSA types? (Choose two.)

A. Type 4 ASBR summary LSAs

B. Type 2 network LSAs

C. Type 3 summary LSAs

D. Type 1 router LSAs

Correct Answer: A,C

Question 8

You deployed a new EX Series switch with DHCP snooping enabled and you do not see any entries in the snooping databases for an interface. Which two Juniper configurations for that interface caused this issue? (Choose two.)

A. MAC limiting is enabled on the interface.

B. Dynamic ARP inspection is enabled on the interface.

C. The interface is configured as a disabled port.

D. The interface is configured as a trunk port.

Correct Answer: C,D

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Question 9

Which statement describes how nonstop active routing (NSR) maintains routing protocol information during a Routing Engine switchover?

A. The Packet Forwarding Engine updates protocol state based on the most recent LSA or BGP update received.

B. The backup Routing Engine continuously synchronized protocol states by running the RPD process.

C. The primary Routing Engine copies protocol information only when an NSR event begins.

D. The backup Routing Engine retrieves routing information from neighboring routers after a switchover.

Correct Answer: B

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Question 10

You manage the Layer 2 network shown in the exhibit. You experience a failure on the ge-0/0/0 link between Switch-1 and Switch-2.

Which statement is correct about the expected behavior?

A. Switch-2's ge-0/0/2 port role and state will transition to root and forwarding

B. Switch-2 will remove itself from the RSTP topology

C. Switch-2's ge-0/0/2 port role and state will remain as designated and forwarding

D. Switch-2 will become the root bridge for a separate RSTP topology

Correct Answer: A

Question 11

Which statement describes how a generated route determines its next hop?

A. It uses the next hop of the least-specific contributing route.

B. It uses a static next hop configured under the aggregate route hierarchy.

C. It uses the next hop of the primary contributing route.

D. It uses the next hop of the first contributing route.

Correct Answer: C

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Question 12

Click the Exhibit button. Devices on VLAN 5 and VLAN 7 need to communicate with each other.
Referring to the exhibit, what will satisfy this requirement?

A. Enable spanning tree on both VLANs and set the EX Series Switch as the root bridge.

B. Add both VLANs to a single trunk port and enable the Multiple VLAN Registration Protocol.

C. Create an integrated routing and bridging (IRB) interface for each VLAN, assign the gateway IP to each IRB, and enable static routing.

D. Configure a family inet interface connecting the two VLANs and assign both subnet IPs to it using secondary addressing.

Correct Answer: C

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Question 13

Which statement is correct about GRE tunnels?

A. The time-to-live field in the tunnel payload is decremented during transit.

B. GRE tunnels only support encapsulating IP traffic.

C. There are 20 bytes of overhead with GRE encapsulation.

D. GRE tunnels only support encapsulating non-IP traffic.

Correct Answer: A

Question 14

What determines the preferred route to a destination in an IS-IS network?

A. the path that has the most recently originated LSP

B. the path that has the highest accumulated metric value

C. the path that has the lowest accumulated metric value

D. the path that passes through a Level 2 router closest to the destination

Correct Answer: C

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

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