單項選擇題

Refer to the exhibit. Which switching feature is being tested?()

A.loop guard
B.PortFast
C.root guard
D.BDPU guard


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Refer to the exhibit. Voice traffic is marked "precedence 5." How much bandwidth is allocated for voice traffic during periods of congestion?()

A.a minimum of 48 kb/s
B.a maximum of 48 kb/s
C.a minimum of 48% of the available bandwidth
D.a maximum of 48% of the available bandwidth

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Refer to the exhibit.The network administrator is in acampus building distant from Building B.WANRouter is hosting a newly installed WAN link on interface S0/0.The new link is not functioning and the administrator needs to determine if the correct cable has been attached to the S0/0 interface.How can the administrator accurately verify the correct cable type on S0/0 in the most efficient manner?()

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When upgrading the IOS image,the network administrator receives the exhibited error message.What could be the cause of this error?()

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問一個怎么樣的屬性,能讓路由不通告給任何的peer?

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Which of the following describes the roles of devices in a WAN?()

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what is four ospf area type?

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A network administrator is troubleshooting the OSPF configuration of routers R1 and R2.The routers cannot establish an adjacency relationship on their common Ethernet link.The graphic shows the output of the show ip ospf interface e0 command for routers R1 and R2.Based on the information in the graphic,what is the cause of this problem?()

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DHCP SERVER在給一個網(wǎng)段設(shè)置POOL時,該網(wǎng)段路由器接口地址能不能放入POOL,能why,不能why。

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