Which IGMPv2 message contains a non-zero "Max Response Time"？（）

单项选择题Apartfrominterdomainmulticastrouting，whatelseisMSDPusedfor？（）

A.Source Specific Multicast and IGMPv2
B.Announcing multicast sources to BGP speakers
C.Anycast RP
D.Intradomain multicast routing

单项选择题Refer to the exhibit. Look at the command output. Assume that there is no other path， and the configuration is correct. What would be the consequences of this situation？（）

A. Users in SW1 can ping SW2 but not vice versa.
B. Users in SW2 can ping SW1 but not vice versa.
C. Users in SW1 and SW2 can ping each other.
D. Users in SW1 and SW2 cannot ping each other.

单项选择题HowisRPFusedinmulticastrouting？（）

A.to prevent multicast packets from looping
B.to prevent PIM packets from looping
C.to instruct PIM where to send a （*， G） or （S， G） join message
D.to prevent multicast packets from looping and to instruct PIM where to send a （*， G） or （S， G） joinmessage

多项选择题Whichtwomulticastaddressrangesareassignedassource-specificmulticastdestinationaddressesandarereservedforusebysource-specificapplicationsandprotocols？（）

A.232.0.0.0/8
B.239.0.0.0/8
C.232.0.0.0/4
D.FF3x：：/32
E.FF2x：：/32
F.FF3x：：/16

单项选择题Refer to the exhibit. Look at the command output. What would be the most probable reason for this port-ID mismatch？（）

A. spanning-tree misconfiguration
B. speed mismatch configuration
C. cabling problem
D. configuration problem