what is the disadvantage of policing？

兩ebgp鄰居發(fā)路由過(guò)來(lái) ，哪些屬性重置？

What field in IP packet is used for classification by QOS？

Local Preference？

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?（）

Refer to the exhibit.Which statement describes DLCI 17?（）

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

如何實(shí)現(xiàn)擁塞避免？

問(wèn)一個(gè)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(gè)是要求用戶輸入用戶名和密碼？