By default, a router interface sends PIM Hello messages at an interval of __________ seconds.

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Typically, a protocol that occupies two ports during communication is called a multi-channel protocol. For such protocols, the ASPF function must be enabled on the firewall to ensure smooth setup of the data channel and reduce the risk of attacks. Which of the following protocols is not a multi-channel protocol?

• A.FTP
• B.SIP
• C.SMTP
• D.H.323

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During daily troubleshooting, engineers may need to check some alarm information of the equipment. Run the termina10 command to open the terminal display debugging/log/alarm information function sent by the information center.

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Which statement about IGMP Proxy is correct? (Multiple choice)

• A.The IGMP Proxy device cannot replace the IGMP querier to send query messages to downstream member hosts to maintain group membership
• B.IGMP Proxy can work with NQA to detect the link status and realize fast switchover between active and standby links.
• C.IGMP Proxy is usually deployed on devices between member hosts of access devices
• D.The downstream interface of the IGMP Proxy device generates a multicast forwarding entry through the information that the member host joins and leaves the multicast group

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If a router ID is configured in both the system via and the BGP view, BGP uses the router ID configured in the BGP view because the BGP view takes precedence over the system view.

• A.FALSE
• B.TRUE

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