Please pair the following IGMP versions with the corresponding working mechanisms.

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As shown in the figure, the four Huawei switching devices have all run and configured the MSTP protocol. Now it is required that the MSTP domain name is set to Huawei.

Which of the following commands need to be configured on the four devices? (Multiple choice)

• A.Region-name Huawei
• B.Domain Huawei
• C.Stpregion-configuration
• D.Activeregion-configuration

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Which of the following working mechanisms are included in PIM-DM? (Multiple choice)

• A.Status refresh
• B.Pruning
• C.Diffusion
• D.Grafting

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By executing the 0 command, users on different ports in the same VLAN can be completely isolated at Layer 2 and Layer 3 and unable to communicate.

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In a WLAN network, when there is an IPv4 Layer 3 networking between the AC and AP, the user needs to configure the Option43 field.
Which of the following functions does it mainly implement?

• A.Set subnet mask options
• B.Set manufacturer-customized options
• C.Set gateway address options
• D.Set DNS server address options

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