H12-821 Exam Details

  • Exam Code
    :H12-821
  • Exam Name
    :HCIP-Datacom-Core Technology V1.0
  • Certification
    :Huawei Certifications
  • Vendor
    :Huawei
  • Total Questions
    :312 Q&As
  • Last Updated
    :Jul 11, 2026

Huawei H12-821 Online Questions & Answers

  • Question 1:

    Which of the following statements about the forwarding plane of a switch is false?

    A. Provides high-speed and non-blocking data channels.
    B. Can encapsulate and decapsulate packets.
    C. Can collect packet statistics.
    D. Consists of main control boards and interface boards.

  • Question 2:

    CORRECT TEXT

    An OSPF AS-external LSA describes a route to an AS external network. When the field in the LSA is 0.0.0.0, the traffic destined for the external network is sent to the ASBR that imports this external route. (Enter the acronym in uppercase.)

  • Question 3:

    A non-client is an IBGP peer that functions as neither an RR nor a client. A non-client must establish fully meshed connections with the RR and all the other non-clients.

    A. TRUE
    B. FALSE

  • Question 4:

    On an OSPF network, if two indirectly connected routers with the same router ID run in the same area, Type 1 LSA calculation fails.

    A. TRUE
    B. FALSE

  • Question 5:

    Access control lists can be classified into which types as follows?

    A. Basic ACL
    B. User-defined ACL
    C. Advanced ACL
    D. Layer 2 ACL

  • Question 6:

    A forwarding information database (FIB) can directly guide packet forwarding on a router.

    A. TRUE
    B. FALSE

  • Question 7:

    Link aggregation is a common network technology. Which of the following are advantages of link aggregation?

    A. Load balancing
    B. Improved reliability
    C. Increased link bandwidth
    D. Route backup

  • Question 8:

    A switch will join the stack system, so the stack ID is manually configured to be 2 in advance, but after joining the stack system, the stack system assigns the stack ID to the switch to be 3 , and the GE0/0/2 interface of the switch is added to the stack system The interface number is GE___.

  • Question 9:

    Based on IGMP snooping, IGMP snooping proxy enables a switch to act as a substitute for an upstream Layer 3 device to send IGMP Query messages to downstream hosts, and also to act as a substitute for downstream hosts to send IGMP Report/Leave messages to an upstream device. As such, this function conserves bandwidth between the upstream device and the local device.

    A. TRUE
    B. FALSE

  • Question 10:

    On a broadcast IS-IS network, a DIS needs to be elected to create and update pseudonodes. Which of the following values is the default DIS priority of an IS-IS interface?

    A. 200
    B. 64
    C. 1
    D. 100

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