What is the next state of initial in spanning-tree protocol？

問一個(gè)怎么樣的屬性，能讓路由不通告給任何的peer？

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

Local Preference？

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？

what is four ospf area type？

Refer to the exhibit.How many broadcast domains exist in theexhibited topology？（）

什么是NAT？

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?（）