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紅字什么意思？
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Local Preference？
A default Frame Relay WAN is classified as what type of physical network?（）
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?（）
What field in IP packet is used for classification by QOS？
what is four ospf area type？
The Frame Relay network in the diagram is not functioning properly.What is the cause of the problem?（）
aaa架構(gòu)中哪個(gè)是要求用戶輸入用戶名和密碼？
QoS Mechanisms：?jiǎn)栐诓渴餛oS中要用的3個(gè)mechanisms是什么？
what is the disadvantage of policing？
R1 will choose which path to reach 10.1.0.0？