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 231:

    Which of the following statements is correct regarding the certification of the ISIS protocol? (Choose two)

    A. Connection authentication can perform authentication for Hello messages at both Level-1 and Level-2.
    B. After configuring connection authentication, the IS-IS Hello (IIH) packets issued by the router must include the authentication TLV.
    C. After configuring area authentication, the router will include the authentication TLV in IIH, SNP, and LSP messages.
    D. For two routers configured with area and interface authentication, having identical passwords allows them to establish an IS-IS adjacency.

  • Question 232:

    In PIM-SM, which of the following description about RP is incorrect?

    A. All members of the group and the multicast sources that send multicast data to the group converge to the unique RP
    B. The initial multicast streams for all groups in the shared tree are forwarded to the receiver via the RP
    C. An RP can serve multiple multicast groups at the same time; a multicast group can correspond to multiple RPs
    D. RPs can be responsible for the forwarding of several or all multicast groups, and there can be one RP in the network

  • Question 233:

    If you delete a declared route entry on a BGP router, the BGP routing process sends an Update message for route withdrawal, which carries the withdrawn route information rather than the mandatory attributes of the discarded route.

    A. True
    B. False

  • Question 234:

    Which of the following statements about EVPN Type5 routing is incorrect?

    A. Type 5 routes carry Layer 3 VNI.
    B. Type 5 routing carries both Layer 2 VNI and Layer 3 VNI.
    C. The IP Prefix field can carry both host and network segment addresses.
    D. Type 5 is an IP prefix route.

  • Question 235:

    Among NETCONF operations, the operation may contain an operation attribute, which is used to specify an operation type for configuration data. Which of the following operation attributes is incorrect?

    A. remove
    B. merge
    C. create
    D. update

  • Question 236:

    Which of the following operations is not involved in the middle phase of a migration?

    A. Migration preparation
    B. On-site monitoring
    C. Migration implementation
    D. Service test

  • Question 237:

    An enterprise has three types of services. Voice and video services are key services and need to be guaranteed, and FTP services are non-key services. Which of the following scheduling modes is optimal for satisfying the service requirements?

    A. WFQ scheduling is configured for IP voice, video, and FTP download services.
    B. PQ scheduling is configured for IP voice and video services, and WFQ scheduling is configured for FTP download services.
    C. LPQ scheduling is configured for IP voice services, PQ scheduling is configured for video services, and WFQ scheduling is configured for FTP download services.
    D. PQ scheduling is configured for IP voice, video, and FTP download services.

  • Question 238:

    The authentication types of IS-IS include interface authentication, area authentication, and domain authentication.

    A. True
    B. False

  • Question 239:

    Which of the following statements about 802.1X authentication are correct? (Choose four)

    A. 802.1X authentication uses EAPoL to exchange authentication information between the client, device, and authentication server.
    B. In EAP termination mode, EAP packets are terminated and re-encapsulated into RADIUS packets on the network access device. The network access device and AAA server use the standard RADIUS protocol to implement authentication, authorization, and accounting.
    C. EAPoL implements EAP encapsulation on an IEEE 802.3 network, whereas EAPoW implements EAP encapsulation on an IEEE 802.11 network.
    D. In EAP relay mode, EAP packets are directly encapsulated by the network access device into RADIUS packets (that is, EAP over RADIUS, or EAPoR). The network access device and AAA server use EAPoR to perform authentication, authorization, and accounting.

  • Question 240:

    A company's Layer 2 network architecture is shown in the figure. When the engineer performs the configuration, they find that services between departments cannot communicate. After checking the device status using the displayed commands, what are the possible causes? (Choose three)

    A. The BPDU interval between switches is not configured
    B. The Transition VLAN mapping between the switches is not configured
    C. The Revision Level configuration is inconsistent between switches
    D. The Region Name configuration is inconsistent between the switches

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.