The difference between ASM and SSM of PIM-SM are? (Multiple choice)
A . SSM does not need to maintain the RP, does not need to build an RPT, and does not need to register multicast source. You can directly establish an SPT between the source and the group member.
B . After the member DR of the SSM learns the requirements of the host, it sends a Join message to the source DR directly.
C . After the member DR of the ASM learns the requirements of the host, it sends a Join message to the source DR directly.
D . ASM does not need to maintain the RP, does not need to build an RPT, and does not need to register multicast source. You can directly establish an SPT between the source and the group member.
Answer: AB