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。

The Frame Relay network in the diagram is not functioning properly.What is the cause of the problem?（） 

How should arouter that is being used in a Frame Relay network be configured to avoid split horizon issues from preventing routing updates?（）

A default Frame Relay WAN is classified as what type of physical network?（）

QoS機制中的分類，采用ip數(shù)據(jù)包中的哪個字段？

Which of the following are key characteristics of PPP?（）

four switches， which one will be root switch.（no pic）.

問一個怎么樣的屬性，能讓路由不通告給任何的peer？

aaa架構(gòu)中哪個是要求用戶輸入用戶名和密碼？

what is the disadvantage of policing？