问答题

简答题 what is ABR？

【参考答案】

A router that has interfaces i......

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Youaredeployingtwocoreswitches，oneineachbuilding，50kmaw...

单项选择题You are deploying two core switches， one in each building， 50 km away from each other. The cross-connection between them will be a Layer 2 2-gigabit EtherChannel with an 802.1Q trunk. You configured it correctly but the link does not come up. The port is in the "admin up" state， and the line protocol is in the "down" state. The fiber link is OK. What would be the most likely reason for the link not to come up？（）

A.The switches are not the same model.
B.You are not using the correct SFP.
C.You are not using correct optical media converters.
D.Configuration should be modified， because the distance is longer.

MQC的3个步骤？

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DuringtheIPv6addressresolution，anodesendsaneighborsolic...

单项选择题During the IPv6 address resolution，a node sends a neighbor solicitation message in order to discover which of these？（）

A.The Layer 2 multicast address of the destination node
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D.The IPv6 address of the destination node based on the destination Layer 2 address

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简答题 what is ABR？