H12-891 Exam Details

  • Exam Code
    :H12-891
  • Exam Name
    :HCIE-Datacom V1.0
  • Certification
    :Huawei Certifications
  • Vendor
    :Huawei
  • Total Questions
    :923 Q&As
  • Last Updated
    :May 27, 2026

Huawei H12-891 Online Questions & Answers

  • Question 501:

    In the following topology diagram, R1 can access the Internet through R2 and R3. An EGP connection is established between R1 and R2, and between R1 and R3. R2 and R3 belong to the same AS, each publishing a default route via BGP. To require R1 to prefer the internet traffic through R2, can the following practices be achieved? (Choose two)

    A. R1 specifies that the peer R3 sets the MED attribute to 150 in the import direction.
    B. R2 specifies that the peer R1 sets the local preference to 150 in the export direction.
    C. R2 specifies that the peer R1 sets the MED attribute to 150 in the export direction.
    D. R1 specifies that the peer R2 sets the local preference in the import direction to 150.

  • Question 502:

    To enhance reliability, you can deploy Huawei iMaster NCE-WAN controllers in active/standby mode. Which of the following IP addresses must be configured to be the same for the active and standby controllers so that the controllers can be accessed properly? (Choose three)

    A. Southbound public IP addresses
    B. Internal interconnection addresses
    C. Southbound private IP addresses
    D. Northbound IP addresses

  • Question 503:

    An advanced access control list is a sequence of rules consisting of permit | deny statements that can match IP packets based on which attributes? (Choose four).

    A. Destination port number
    B. Source address
    C. Destination address
    D. Source port number

  • Question 504:

    Flavors are additional behaviors defined to enhance the End series instructions in SRv6. Which of the following End instructions can the PSP flavor be attached to? (Choose three)

    A. End.X
    B. End.BM
    C. End.T
    D. End

  • Question 505:

    How do the IEEE 802.1D (STP) and IEEE 802.1w (RSTP) standards handle Bridge Protocol Data Units (BPDUs)?

    A. An 802.1D bridge only forwards BPDU packets received from the root bridge.
    B. An 802.1D bridge does not forward BPDU messages.
    C. An 802.1w bridge forwards only BPDU packets received from the root bridge.
    D. An 802.1w bridge does not forward BPDU packets.

  • Question 506:

    The RR (Route Reflector) is critical to the Huawei SD-WAN Solution, and its deployment mode varies based on the scenario. In which of the following modes can an RR be deployed? (Choose three)

    A. Multi-area deployment of the RR
    B. Independent deployment of the RR
    C. Co-deployment of the RR and hub site
    D. Partially independent deployment of the RR

  • Question 507:

    DRAG DROP

    In the gRPC-based telemetry protocol, the data model layer consists of the RPC layer,telemetry layer, and service data layer. Drag each.proto file to the layer where the file should be located.

    Select and Place:

  • Question 508:

    There are two community filters: ip community-filter 1 permit 100:1 200:1 ip community-filter 2 permit 100:1 ip community-filter 2 permit 200:1

    Regarding the above community filters, which of the following description is correct? (Choose two)

    A. As long as the community attribute value carried in the BGP route contains 100:1 or 200:1, or both, the BGP route matches community-filter 1
    B. As long as the community attribute value carried in the BGP route contains 100:1 or 200:1, or both, the BGP route matches community-filter 2
    C. The BGP route matches community-filter 1 only if the community attribute values carried in the BGP route contain 100:1 and 200:1
    D. A BGP route matches community-filter 2 only if the community attribute values carried in the BGP route include 100:1 and 200:1

  • Question 509:

    In SSP packages, Jinja2 templates are used to implement mapping. In the Jinja2 syntax, {% ... %} contains control structures, for example, a 'for' loop.

    A. TRUE
    B. FALSE

  • Question 510:

    Which of the following description about the RD attribute filter for BGP is correct? (Choose two)

    A. If RD-filter is not configured, but the RD-filter is referenced for filtering, the matching result is deny.
    B. If RD-filter is configured, but the routed RD is not matched with any of the RDs defined in the rule, the default match result is permit.
    C. Multiple rules are matched in the order in which they are configured.
    D. There is always an "or" relationship between the rules configured by RD-filter.

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