单项选择题
Refer to the exhibit. Look at the command output. What can you use to prevent this behavior？ （）
A. UDLD （UniDirectional Link Detection）
B. spanning-tree loopguard
C. VTP mode transparent
D. switchport mode desirable
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相关考题
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单项选择题
WhichIGMPv2messagecontainsanon-zero"MaxResponseTime"？（）
A.Membership Query
B.Membership Report
C.Membership Delay
D.Backward Compatible IGMPv1 Report Message -
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.
