单项选择题
What is Phantom RP used for？（）
A.it is used for load balancing in bidirectional PIM B.it is used for redundancy in bidirectional PIM C.it is used for redundancy in PIM-SM D.it is used for load balancing in PIM-SM
单项选择题 Refer to the exhibit. Look at the command output. What can you use to prevent this behavior？ （）
单项选择题 WhichIGMPv2messagecontainsanon-zero"MaxResponseTime"？（）
单项选择题 Apartfrominterdomainmulticastrouting，whatelseisMSDPusedfor？（）
