【求教】400-101中Q129与Q190的差异？

liubin0521

Q 129 答案给的是B
Which IPv4 feature prevents multicast joins on a per-port basis?
A.MLD filtering
B.IGMP snooping
C.IGMP filtering
D.PIM snooping
Q190 答案给的是A
Which Catalyst switch feature configured on a per-port basis can be used to prevent attached hosts from joining select
multicast group?
A. IGMP Filtering
B. MLD Filtering
C. IGMP Snooping
D. PIM Snooping



恕我愚见，个人感觉英文表述虽有不同，但意思其实是差不多的，应该都选IGMP filtering. 能否帮忙解释一下为何Q129选B，提前谢过大神！

zrui1121

我也支持一样的答案，只是表述不同，都是IGMP Filtering的特征

meherthegeek

Thank you very much