Which of the following descriptions of RP in PIM-SM are correct? (Multiple choice)

• A.Dynamic RP election will involve two types of roles, C-BSR and C-RP.
• B.Not all PIM routers in the network need to know the address of the RP
• C.RP is used to process source DR registration information and group member joining requests
• D.Only static RP can specify which multicast groups the RP provides services for.

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Execute the () saved-configuration command to clear the contents of the configuration file used for the next startup of the device, and unspecify the configuration file used for the next startup of the system, thereby restoring the device configuration to the default value.

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When deploying a VRRP network, an enterprise administrator sets the virtual IP address to
192.168.1.254 and VRID to 1. Which of the following is the virtual MAC address after the network becomes stable?

• A.0000-5e01-0101
• B.0000-5e01-0254
• C.0000-5e00-0101
• D.0000-5e00-0254

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If two Huawei routers establish a BFD session, the sending interval of AR1 is 50 milliseconds and the receiving interval is 80 milliseconds; the sending interval of AR2 is 60 milliseconds and the receiving interval is 90 milliseconds, so which of the following descriptions of the post-negotiation time interval is correct?

• A.After negotiation, the sending interval of AR2 is 80 milliseconds and the receiving interval is 90 milliseconds.
• B.After negotiation, the sending interval of AR2 is 90 milliseconds and the receiving interval is 80 milliseconds.
• C.AR1 has a sending interval of 60 milliseconds and a receiving interval of 90 milliseconds after negotiation.
• D.After negotiation, AR1 has a sending interval of 50 milliseconds and a receiving interval of 80 milliseconds.

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VRF, also called VPN instance, is a network virtualization technology that helps VPN technology to isolate users. In normal cases, multiple VPN instances can be created on a physical device, and each VPN instance has independent entries. Which of the following resources can be independently owned by a VPN instance?

• A.Interface
• B.Routing table
• C.MAC address table
• D.Routing protocol process

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