多项选择题
Which three port states are used by RSTP 802.1w？（）
A.Listening
B.Learning
C.Forwarding
D.Blocking
E.Discarding
F.Disabled
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相关考题
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问答题
r1isthehub，multipointmodesubinterface，r2andr3isspoke，whenr2downatthespoke，Whatwillr1react？howaboutr3？ -
单项选择题
TheclassicSpanningTreeProtocol（802.1D1998）useswhichsequenceofvariablestodeterminethebestreceivedBPDU？（）
A.lowest root bridge id；lowest sender bridge id；lowest port id；lowest root path cost
B.lowest root path cost；lowest root bridge id；lowest sender bridge id；lowest sender port id
C.lowest root bridge id；lowest sender bridge id；lowest root path cost；lowest sender port id
D.lowest root bridge id；lowest root path cost；lowest sender bridge id；lowest sender port id -
问答题
Inarunsparse-dense-modemulticastnetwork，whenrendezvouspointdown，willtherecipientreceivethepacketssendbythesource？why？
