单项选择题
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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相关考题
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问答题
R1（AS1）------R2（AS2）-----R3（AS2）----R4（AS2） ，R1在AS1，R2，R3，R4在AS2，R1和R2建EBGP ， R2和R3 IBGP，R3和R4 IBGP，产生BGP路由从R1传给R2，问这条路有会不会在R4上出现，如果不会，怎么解决. -
单项选择题
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 -
问答题
As 2 产生A的BGP路由，R1上分别设置了weight， local-precedence如图所示：问R1要到A，把数据包给谁？
