單項選擇題Which IGMPv2 message contains a non-zero "Max Response Time"？（）

A.Membership Query
B.Membership Report
C.Membership Delay
D.Backward Compatible IGMPv1 Report Message


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1.單項選擇題Apart from interdomain multicast routing， what else is MSDP used for？（）

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

2.單項選擇題

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.

3.單項選擇題How is RPF used in multicast routing？（）

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

5.單項選擇題

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

9.多項選擇題Which three fields are optional in an OSPFv3 external LSA？（）

A.Forwarding Address
B.External Route
C.Reference Link-State ID
D.Option
E.Prefix Options

10.多項選擇題The network administrator is trying to add Switch1 to the network， but the 802.1Q trunk is not coming up. Switch1 was previously tested in the laboratory and its trunk configuration worked fine. What are three possible causes of this problem？（）

A. The trunking configuration mode on Switch1 is set to Off.
B. The trunking configuration mode on the other end is set to On.
C. The trunking configuration mode on the other end is set to Desirable.
D. Cisco Discovery Protocol is not running on the other end.
E. There is a VTP domain name mismatch.
F. Switch1 does not support 802.1Q

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