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H12-831 Real Exam Questions

HCIP-Datacom-Advanced Routing & Switching Technology V1.0

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Question 1 Multiple choice

On the enterprise network shown in the figure, R3 is connected to the NMS, and all devices on the network communicate with the NMS through a VPN.

During an inspection, it is found that R3 has redundant RTs (Route Targets).

Which of the following commands can be run on R3 to delete the redundant RTs without affecting the connectivity between all devices and the NMS?

Options:

  1. A

    undo vpn-target 3:1 import-extcommunity

  2. B

    undo vpn-target 1:3 export-extcommunity

  3. C

    undo vpn-target 1:3 import-extcommunity

  4. D

    undo vpn-target 2:3 export-extcommunity

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Correct answers: B, D

Question 2 Single choice

After basic QinQ is configured on an interface of a switch, the switch adds the default VLAN tag of the interface to packets only when the interface receives tagged packets. In this way, the VLAN space is expanded.

  1. A

    TRUE

  2. B

    FALSE

Show answer and explanation

Correct answer: B

Question 3 Multiple choice

On the OSPFv3 network shown in the figure, area 1 is a stub area.

Which of the following statements are true?

  1. A

    Default routes exist in the routing tables of R1 and R2.

  2. B

    Both R1 and R2 generate Network-LSAs.

  3. C

    Both R1 and R2 generate Inter-Area-Prefix-LSAs.

  4. D

    Both R1 and R2 generate Intra-Area-Prefix-LSAs.

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Correct answers: A, D

Question 4 Fill in the blank

FILL IN THE BLANK

VLAN aggregation is configured on a switched network. Sub-VLAN 2 and Sub-VLAN 3 are added to Super-VLAN 10. To enable hosts in different sub-VLANs to communicate with each other, run the following command in the VLANIF 10 view corresponding to the Super-VLAN.

(Enter lowercase letters.)

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Accepted answer: inter-sub-vlan-proxy enable

Question 5 Single choice

On the OSPFv3 network shown in the figure, OSPFv3 is enabled on the interfaces connecting R1, R2, and R3. The router ID of each router is 10.0.X.X, where X is the number of the router. If you check detailed information about an LSA on R3, the command output shows that the LSA is generated by R2 and describes the IPv6 prefix address associated with the Router-LSA.

  1. A

    TRUE

  2. B

    FALSE

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Correct answer: A

Question 6 Single choice

In the hub-spoke networking shown in the figure, which of the following commands must be configured on the Hub-PE to ensure correct route transmission?

  1. A

    [Hub-PE-bgp-VPN_out] peer x.x.x.x allow-as-loop

  2. B

    [Hub-PE-bgp-VPN_in] peer x.x.x.x allow-as-loop

  3. C

    [Hub-PE-bgp-VPN_in] peer x.x.x.x soo 200:1

  4. D

    [Hub-PE-bgp-VPN_out] peer x.x.x.x soo 200:1

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Correct answer: C

Question 7 Single choice

The rollback operation of project cutover can be temporarily determined according to the situation during cutover, and no advance plan is required.

  1. A

    True

  2. B

    False

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Correct answer: B

Question 8 Single choice

According to the configuration shown in the figure below, you can know that R4 has an interface advertised into IS-IS?

  1. A

    1

  2. B

    3

  3. C

    2

  4. D

    0

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Correct answer: B

Question 9 Single choice

On the OSPFv3 network shown in the figure, area 1 is a stub area, area 2 is a common area, and area 3 is an NSSA.

Which of the following LSAs is displayed only in area 2?

  1. A

    Router-LSA

  2. B

    Link-LSA

  3. C

    Intra-Area-Prefix-LSA

  4. D

    AS-External-LSA

Show answer and explanation

Correct answer: D

Question 10 Multiple choice

A campus deploys both IPv4 and IPv6 networks for service testing, and runs IS-IS to realize network

interconnection. The IS-IS routing protocol has good scalability and is widely used in the existing network.

Which of the following statements is true about IS-IS scalability?

  1. A

    IS-ISuseTLVstructure builds the message so thatIS-ISMore flexibility, flexibility and scalability

  2. B

    forIS-ISIn terms of adding new features, only adding newTLVJust

  3. C

    IS-ISto supportPV6to addTLVcarryPv6Address information

  4. D

    N LPIDYesIS-ISto supportIPv6an addedTLV

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Correct answers: A, B, C