A. False

B. True

A. Unicast and broadcasting cannot effectively achieve data transmission between one source and multiple destinations on P2MP, but multicast technology can

B. Multicast technology is able to reduce redundant traffic, so network bandwidth can be saved C.
Multicast technology is used for "-to-many" applications

C. Since multicast is based on TCP to establish a connection, multicast technology can ensure the reliable transmission of data

A. See the following entry in the BGP routing table:* 172161.11/32 000010 0? Indicates that the route is available non-optimal

B. In PrefVal, Local_ Preference is equal to the case if the route is generated locally, IBGP Routing, the BGP preference for EBGP routing, is generated effectively referring to route priority.

C. non-aggregate routes take precedence over aggregate routes

D. For next_hop unreachable routes when invalid routes, do not participate in the preferred.

A. TRUE

B. FALSE

A. Consortium can easily detect the routing loop within the AS because EBGP is running between the subAS

B. The consortium divides an AS into sub-AS, and the alliance external AS still considers the consortium to be an AS

C. The subas number of the federation, which by default is advertised to the BGP peer outside the federation

D. Subsystems within a consortium can use private AS numbers. Huawei NE/AR routers, a consortium can be configured with up to 32 subsystems.