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A.Only UplinkFast and BackboneFast are specified in 802.1w；PortFast must be manually configured.
B.Only PortFast is specified in 802.1w；UplinkFast and BackboneFast must be manually configured.
C.None of the proprietary Cisco enhancements are specified in 802.1w.
D.PortFast，UplinkFast，and BackboneFast are specified in 802.1w.
A.IP ToS of 0xEF
B.IP experimental ECN
C.DSCP decimal 5
D.Binary value of 101110
最新試題
Which of the following describes the roles of devices in a WAN?（）
問一個怎么樣的屬性，能讓路由不通告給任何的peer？
What is the next state of initial in spanning-tree protocol？
SPT初始狀態(tài)之后的一個狀態(tài)是什么？
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?（）
A default Frame Relay WAN is classified as what type of physical network?（）
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?（）
What is the three main step of using the QoS feature with MQC command line interface？
what is the disadvantage of policing？
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）？