Which of the following statements is incorrect about access control on small and midsize campus networks based on the Huawei CloudCampus solution?

• A.iMaster NCE can function as an authentication server.
• B.Cloud APs support local Portal authentication.
• C.iMaster NCE can function as a Portal relay device.
• D.iMaster NCE can interconnect with a third-party RADIUS server.

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The following description of the RD attribute filter for BGP is correct?

• A.If RD-filter is configured, but the routed RD is not matched with any of the RDs defined in the rule, the default match result is permit.
• B.There is always an "or" relationship between the rules configured by RD-filter.
• C.If RD-filter is not configured, but the RD-filter is referenced for filtering, the matching result is deny.
• D.Multiple rules are matched in the order in which they are configured.

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Regarding the description of VRRP Fast Switching, the error is ?

• A.Use VRRP to monitor BFD sessions or EFM features, either in BPD sessions or EFM session states After the change, the VRRP module is notified to achieve fast VRRP switching
• B.at the same time If you configure to monitor multiple BFDs at the same time Then the various configurations are interrelated and may have an impact
• C.A VRRP backup group cannot monitor Peer BFD, Link BFD, and Normal BFD
• D.When a VRRP backup group monitors normal BFD, when the BFD state changes, the active-standby state is changed by modifying the backup group priority

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During the LDPsession setup process, the active party first sends the Illitalization information to negotiate the parameters, and if the passive party does not accept the negotiation parameters, which of the following messages will be sent? <(Single select).)

• A.Error Notification Message
• B.Keepalive Message
• C.Hello Message
• D.Initialization Message

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Regarding the description of the hello message in the PIM-SM message, the error is ?

• A.Elect dr in multiple router segments with hello messages
• B.In a PIM-SM network, a newly started multicast router needs to use hello messages to discover neighbors and maintain neighbor relationships
• C.Routers periodically use hello messages to stay in touch
• D.Hello messages are sent to multicast address 224005

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