A.upon a port state change
B.upon receiving a topology change notification
C.when transitioning from discarding to forwarding
D.when transitioning from forwarding to discarding
E.only when changing from listening to discarding
F.when CAM resources have been completely used up
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A.it is newer
B.it has smaller timers
C.it has less overhead
D.it is not timer-based
Refer to the exhibit. Which of these is applied to the Bearer class？（）
A.WRED
B.traffic shaping
C.packet marking
D.packet classification
E.FIFO queuing within the class
Refer to the exhibit. Which switching feature is being tested？（）
A.loop guard
B.PortFast
C.root guard
D.BDPU guard
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
最新試題
問一個怎么樣的屬性，能讓路由不通告給任何的peer？
When upgrading the IOS image,the network administrator receives the exhibited error message.What could be the cause of this error?（）
As a CCNA candidate,you must have a firm understanding of the IPv6 address structure.Refer to IPv6 address,could you tell me how many bits are included in each filed?（）
What field in IP packet is used for classification by QOS？
Which of the following describes the roles of devices in a WAN?（）
Refer to the exhibit.What is the meaning of the term dynamic as displayed in the output of the show frame-relay map command shown？（）
QoS Mechanisms：問在部署QoS中要用的3個mechanisms是什么？
QoS機(jī)制中的分類，采用ip數(shù)據(jù)包中的哪個字段？
兩ebgp鄰居發(fā)路由過來 ，哪些屬性重置？
當(dāng)將多個交換機(jī)加入到MST region當(dāng)中會發(fā)生什么（what happen）？