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H12-891 Real Exam Questions

HCIE-Datacom V1.0

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Question 1 Fill in the blank

FILL IN THE BLANK

When static IPsec VPN is used for WAN interconnection in the Huawei CloudCampus Solution, the AP, Router, and _____ can be used as egress devices.

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Accepted answer: FIREWALL

Question 2 Single choice

Which of the following GR description about IS-IS is correct?

  1. A

    The GR feature of IS-IS is enabled by default.

  2. B

    IS-IS GR has a total of four timers.

  3. C

    IS-IS GR notifies events and maintains neighbor relationships through CSNP messages.

  4. D

    IS-IS GR defines a new TLV structure to support this feature.

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Correct answer: D

Question 3 Single choice

Cross-device link aggregation enables back-to-back transmission of data traffic and provides redundancy for the stack member switches. However, due to the limited bandwidth of the stack cable between the devices, the forwarding efficiency can be improved in the following ways:

  1. A

    Enable traffic to be forwarded locally first

  2. B

    Connect the stacking devices via a stacking card

  3. C

    Configure the stacking system MAC address switching

  4. D

    Enable the stacking multi-master check function

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Correct answer: A

Question 4 Multiple choice

In the evolution from IPv4 networks to IPv6, several transition technologies have emerged.

Which of the following are common types of transition technologies? (Choose four)

  1. A

    Dual-stack technology

  2. B

    Tunneling technology

  3. C

    Compatibility technology

  4. D

    Conversion technology

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Correct answers: A, B, C, D

Question 5 Single choice

Two routers are connected through a serial port but cannot ping each other. The port status is checked as follows.

Which of the following information determine the cause?

  1. A

    Insufficient link bandwidth

  2. B

    The IP addresses on both ends are not in the same network segment

  3. C

    The link-layer protocols on both ends are inconsistent

  4. D

    The subnet mask does not match

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Correct answer: C

Question 6 Single choice

In 6PE and 6VPE networking, no VPN instance needs to be created on PEs.

  1. A

    TRUE

  2. B

    FALSE

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Correct answer: A

Question 7 Single choice

ipv6 link-local addresses can be generated through stateless autoconfiguration

  1. A

    TRUE

  2. B

    FALSE

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Correct answer: B

Question 8 Single choice

Which of the following description about Filter-Policy is correct?

  1. A

    With Filter-Policy, on ASBR in OSPF, you can filter the generation of type 5 LSA and type 7 LSA.

  2. B

    Prefix lists can be used to filter both routes and packets.

  3. C

    Filter-policy filters the link-state information received or published, and can modify the properties of route entries.

  4. D

    When using a prefix list to filter routes, the table entry ip-prefix 1 deny 0000 0 less-equal 32 matches only the default route.

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Correct answer: A

Question 9 Multiple choice

Which of the following description of MED is correct? (Choose two)

  1. A

    The MED default value is 100

  2. B

    MED can only be passed within this AS

  3. C

    MED is an optional non-transitive attribute

  4. D

    The MED default value is 0

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Correct answers: C, D

Question 10 Multiple choice

An LSR supports various label retention modes.

Which of the following statements regarding the liberal mode are correct? (Choose two)

  1. A

    This label retention mode saves the memory and label space.

  2. B

    An LSR retains labels from a neighboring LSR only when the neighbor is its next hop.

  3. C

    An LSR reserves all labels distributed by its neighbor.

  4. D

    Liberal mode allows the device to retain labels from all LSRs, not just the next hop.

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Correct answers: C, D