H12-811 Exam Details

  • Exam Code
    :H12-811
  • Exam Name
    :HCIA-Datacom V1.0
  • Certification
    :Huawei Certifications
  • Vendor
    :Huawei
  • Total Questions
    :838 Q&As
  • Last Updated
    :May 26, 2026

Huawei H12-811 Online Questions & Answers

  • Question 271:

    The network shown in the figure below. Which router is the BDR in this network? () (Single- choice question) A. Router B

    B. No BDR

    C. Router C

    Correct Answer. C

  • Question 272:

    According to the command output as shown in the figure, which of the following descriptions is correct? () (Multiple Choice Questions)

    A. GigabitEthernet0/0/l allows VLAN1 to pass
    B. GigabitEthernet (/0/1 does not allow VLAN1 to pass
    C. If you want to change GigabitEthernet (0/0/1 to Access port, you first need to use the command "undo port trunk Allow-pass vlan all"
    D. If you want to turn GigabitEthernet0/o/1 into an Access port, you first need to use the command "undo port trunk Allow-pass vlan 2 to 4094"

  • Question 273:

    When a switch receives a unicast data frame with a VLAN tag, but finds that the destination MAC address of the data frame cannot be queried in its MAC address table, the switch's processing behavior for the data frame is ().

    A. The switch will broadcast this data frame to all ports (except the receiving port) in the VLAN where the data frame is located
    B. The switch will broadcast the data frame to all ports
    C. The switch will discard this data frame
    D. The switch will broadcast this data frame to all Access ports

  • Question 274:

    At what percentage does the DHCP client send the lease renewal message for the first time? ()

    A. 0.5
    B. 0.875
    C. 1
    D. 0.25

  • Question 275:

    Which of the following is not included in the VRP system login method? ()

    A. Telnet
    B. Netstream
    C. SSH
    D. web

  • Question 276:

    How to deal with the data frame sent by the Trunki port? ()

    A. When the VLAN Iis the same as the PVID of the port and is a VLAN ID that the port allows to pass through, remove the Tag and send the message
    B. When the VLAN ID is different from the PVID of the port, the data frame is discarded
    C. When the VLAN Iis different from the PVID of the port, replace it with PVIForward
    D. When the VLAN Iis different from the PVID of Jingkou, the TAG is stripped and forwarded

  • Question 277:

    As shown in the following figure, in the switching network, all switches are running the stp protocol. When the topology is stable, which of the following switches can be used to modify the BPDU sending cycle. Can it affect the SWD configuration BPDU sending cycle? () (Single-choice question)

    A. SWA
    B. SWC
    C. SWD

  • Question 278:

    Layer 3 devices like routers receive data frames based on () Forwarding data frames.

    A. ARP table
    B. MAaddress table
    C. Routing table

  • Question 279:

    A switch receives a unicast data frame with a VLAN tag, but cannot find the destination MAC address of the data frame in its MAC address table. In this case, which action will the switch take?

    A. The switch broadcasts the data frame on all interfaces.
    B. The switch discards the data frame.
    C. The switch broadcasts the data frame on all interfaces (except that on which it was received) in the VLAN to which the data frame belongs.
    D. The switch broadcasts the data frame on all access interfaces.

  • Question 280:

    In the network shown in the figure below, switch A and router A are connected by two links, and the two links are aggregated in manual load sharing mode. The aggregated port number is 1, and the aggregated link performs data forwarding It needs to carry VLAN TAG100, and switch A uses trunk link. Which of the following configurations should be used for switch A? ()

    A. interface Eth-Trunk 1 Port link-type trunk Port trunk allow-pass vlan 100# Interface GigabitEthernet0/0/1Eth-trunk 1 # Interface GigabitEthernet0/0/2Eth-trunk 1 #
    B. interface Vlanif 100 Ip address10.0.12.1255.255.255.0 #
    C. interface Eth-Trunk 1 Ip address10.0.12.1255.255.255.0#
    D. interface Eth-Trunk 1 Mode lacp-static Port link-type trunk Port trunk allow-pass vlan 100# Interface GigabitEthernet0/0/1Eth-trunk 1 # Interface GigabitEthernet0/0/2Eth-trunk 1 #

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