多项选择题
Which two of these multicast deployments are most susceptible to attacks from unknown sources？（）
A. ASM B. BiDir PIM C. PIM-SM RP D. RP-Switchover E. Source Specific Multicast
单项选择题 WhatisthedefaultvalueoftheSPTthresholdinCiscorouters？（）
多项选择题 Refer to the exhibit. Which two statements are correct regarding the creation of a multicas tdistribution tree？ （）
单项选择题 TowhichofthesedoesIPmulticastsendpackets？（）
