QoS機(jī)制中的分類，采用ip數(shù)據(jù)包中的哪個(gè)字段？

DHCP SERVER在給一個(gè)網(wǎng)段設(shè)置POOL時(shí)，該網(wǎng)段路由器接口地址能不能放入POOL，能why，不能why。

一堆交換機(jī)一個(gè)server、一個(gè)transpare，問(wèn)配置prune在哪里配置？

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

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

hsrp speak狀態(tài)是什么意思？

aaa架構(gòu)中哪個(gè)是要求用戶輸入用戶名和密碼？

SPT初始狀態(tài)之后的一個(gè)狀態(tài)是什么？

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

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?（）