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
    :May 31, 2026

Huawei H12-821 Online Questions & Answers

  • Question 251:

    Which of the following statements regarding IGMPv1 and IGMPv2 are true?

    A. 1GMPv2 supports only general query.
    B. 1GMPv2 defines the Leave message type.
    C. IGMPv1 does not define the IGMP Leave message type.
    D. IGMPv1 supports general query.

  • Question 252:

    The Origin attribute is used to define the origin of BGP path information. There are three types of Origin attributes. Which of the following lists the Origin attributes in descending order of priority?

    A. IGP > EGP > Incomplete
    B. Incomplete > IGP > EGP
    C. EGP > IGP > Incomplete
    D. Incomplete > EGP > IGP

  • Question 253:

    On an OSPF network, if the network type is NBMA , a router unicasts all protocol packets; if the network type is broadcast , a router multicasts all protocol packets.

    A. TRUE
    B. FALSE

  • Question 254:

    In BGP, the Origin attribute is used to identify the origin of a route. Which of the following statements are true about the Origin attribute?

    A. If a route is imported to BGP by the originator using the network command, the Origin attribute of the BGP route is displayed as i in the BGP routing table.
    B. If a route is learned through EGP, the Origin attribute of this BGP route is displayed as ? in the BGP routing table.
    C. If multiple routes carry the same destination address but different Origin attributes and all other route selection conditions are the same, BGP selects the optimal route according to the Origin attribute in the following order: IGP > EGP > Incomplete.
    D. This attribute is a well-known mandatory attribute.

  • Question 255:

    Which of the following statements regarding the BGP error display of a router false?

    A. The error may be caused by the incorrect neighbor address.
    B. The neighbor address of this router is 10.1.1.5.
    C. Error Type indicates that the BGP error is caused by the neighbor relationship error.
    D. The error occurred at 12:40:39 on March 22, 2010.

  • Question 256:

    After a BGP peer relationship is established between two ends, changing the router ID of one end resets the BGP peer relationship.

    A. TRUE
    B. FALSE

  • Question 257:

    DRAG DROP

    What is the correct procedure for a VLAN pool to assign terminals to VLANs.

    Select and Place:

  • Question 258:

    Which of the following descriptions about the triggering mechanism of 802.1X authentication is correct? (Multiple choice)

    A. The authentication device can trigger authentication in multicast or unicast mode
    B. 802.1X authentication can only be initiated by the client
    C. The 802.1X client can trigger authentication by multicast or broadcast
    D. 802.1X authentication cannot be initiated by an authentication device (such as an 802.1 switch)

  • Question 259:

    DRAG DROP

    Huawei modular devices have multiple hardware modules that provide different functions. Match the following hardware modules with their functions.

    Select and Place:

  • Question 260:

    The administrator of an enterprise configures SNMPv3 on a device for communicating with the NMS (Network Management System) . After the configuration is complete, the display trapbuffer command output shows that there are traps in the trap buffer of the information center , but the NMS does not receive any of them . Which of the following may cause this problem?

    A. The SNMP version configured on the device is different from the SNMP version of traps sent by the device.
    B. The SNMPv3 password used by the NMS is incorrect.
    C. The size of packets sent by the NMS exceeds the threshold set on the device.
    D. The community name configured on the NMS is inconsistent with that configured on the device.

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