1. Home
  2. Huawei
  3. H12-891

Huawei H12-891 Online Practice Questions and Exam Preparation

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 351:

    Which of the following items are included in static information collection and analysis? (Choose two)

    A. Device types
    B. Interface types
    C. License
    D. Packet loss rate

  • Question 352:

    Which of the following descriptions about the BSR/RP mechanism is correct? (Choose three)

    A. A PIM-SM domain can have more than one C-BSR, but only one BSR is elected, which collects C-RP information.
    B. The BSR advertises BSR and C-RP information to all routers in the PIM-SM domain by flooding Bootstrap packets.
    C. A C-BSR can also collect C-RP information by receiving C-RP packets.

  • Question 353:

    Prefix segments and adjacency segments are globally visible and unique.

    A. TRUE
    B. FALSE

  • Question 354:

    In a Cross-Domain VPN Option B scenario, which of the following descriptions is incorrect?

    A. During the packet forwarding process, it is necessary to exchange the VPN's private network LSP between the ASBRs via IP-EBGP neighbor relationships.
    B. The two ASBRs form IP-EBGP neighbor relationships.
    C. The cross-domain VPN Option B scheme is not limited by the number of interconnection links between ASBRs.
    D. The outer layer tag is exchanged between two ASBRs for VPNv4 routes.

  • Question 355:

    Which of the following statements contains an error regarding OSPF routing calculation?

    A. Compared to the PRC algorithm, the ISPF algorithm calculates only the changed leaf nodes when the route changes, whereas the PRC algorithm recalculates all routes.
    B. When Type 1 and Type 2 LSAs on the network change, OSPF uses the ISPF algorithm to recalculate the routes.
    C. An OSPF router uses the full SPF algorithm to calculate all nodes in the network when initially calculating routes.

  • Question 356:

    NETCONF uses an XML-based encoding format, where text files are used to represent complex hierarchical data. Consider the following XML file:

    Learners

    Huawei

    Reminder

    Don't forget Reading!

    Which of the following statements about this XML structure are correct? (Choose four)

    A. encoding: indicates the character set encoding format. Currently, only UTF-8 encoding is supported.
    B. / indicates the end of the current tag.
    D. ?> indicates the end of an instruction.

  • Question 357:

    What kind of scenario can use AS-path-filter? (Choose three)

    A. Filters routes received from BGP neighbors based on the AS PATH attribute carried by the route, such as the command peer x.x.x.x as-path-filter import
    B. The apply clause in Route-policy
    C. Filters routes sent to BGP neighbors based on the AS PATH attribute that the route carries. For example, the command peer x.x.x.x as-path-filter export
    D. The if-match clause in Route-policy

  • Question 358:

    Which of the following languages is integrated into the OPS?

    A. Python
    B. C programming language
    C. Java
    D. C++

  • Question 359:

    The switches SWA and SWB are connected by two Ethernet links. On switch SWA, the following interface configuration is applied.

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

    [SWA]interface GigabitEthernet 1/0/1 [SWA-GigabitEthernet1/0/1]port link-type trunk [SWA-GigabitEthernet1/0/1]port trunk allow-pass vlan 1 10 100 [SWA]interface GigabitEthernet 1/0/2 [SWA-GigabitEthernet1/0/2]port link-type trunk [SWA-GigabitEthernet1/0/2]port trunk allow-pass vlan 1 10

    A. Without changing the current configuration, GigabitEthernet1/0/1 and GigabitEthernet1/0/2 can join the same aggregation group.
    B. Because different VLANs are allowed on the interfaces, GigabitEthernet1/0/1 and GigabitEthernet1/0/2 cannot join the same aggregation group.
    C. After link aggregation is configured on both SWA and SWB, if MSTP is enabled on the switches, both GigabitEthernet1/0/1 and GigabitEthernet1/0/2 will be in the MSTP forwarding state.
    D. The two interfaces can join the same aggregation group only if the configuration of GigabitEthernet1/0/2 is modified to match that of GigabitEthernet1/0/1.

  • Question 360:

    Which of the following statements correctly describe the IPv6 Solicited-Node address?

    A. This is a specific address that is used for resolution in ARPv6 for the MAC address.
    B. The Solicited-Node address on the router interface is automatically generated and multiple addresses can be present.
    C. If the Solicited-Node address is not configured, the router automatically generates one on each interface.
    D. The IPv6 Solicited-Node address was introduced to support IPv6 multicast.

Related Exams:

Tips on How to Prepare for the Exams

Nowadays, the certification exams become more and more important and required by more and more enterprises when applying for a job. But how to prepare for the exam effectively? How to prepare for the exam in a short time with less efforts? How to get a ideal result and how to find the most reliable resources? Here on Vcedump.com, you will find all the answers. Vcedump.com provide not only Huawei exam questions, answers and explanations but also complete assistance on your exam preparation and certification application. If you are confused on your H12-891 exam preparations and Huawei certification application, do not hesitate to visit our Vcedump.com to find your solutions here.