A. IGMP proxy device cannot send query messages to downstream member hosts in place of the IGMP queryer to maintain group membership

B. IGMP proxy can detect the link status with the linkage through the information of the member host joining/leaving the multicast group, and realize the rapid switching of the primary and standby device links

C. The downstream interface of the IGMP proxy device generates multicast relay table items

D. IGMP proxy is typically deployed on devices between hosts that are members of the access device The

A. BGP routers do not announce any slaves The EBGP peer comes to update the information to its EBGP peer

B. Any update information received from the EBGP peer that contains its own AS number in the AS-PATH attribute is discarded via the AS-PATH attribute

C. Any routing information from an IBGP peer is advertised to the other IBGP peers

D. Non-RR BGP routers do not announce any updates from IBGP peers to other IBGP peers

A. TRUE

B. False

A. LS update packet synchronizes the link state database by sending detailed LSA information
2

B. When an LsUpdate packet is received, the router must send an LsAck acknowledgment

C. The interface sends a Hello packet immediately after joining the OSPF region

D. LS update packet is sent only when the adjacency relationship is established

A. Simplifies network management and reduces the complexity of network deployment planning

B. Improved network equipment and link utilization

C. Business disruption time is greatly reduced

D. It can effectively reduce network power consumption