The following configuration line was added to router R1 Access-list 101 permit ip 10.25.30.00.0.0.255 any What is the effect of this access list configuration?（）

Which of the following describes the roles of devices in a WAN?（）

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

what is four ospf area type？

aaa架構(gòu)中哪個(gè)是要求用戶輸入用戶名和密碼？

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

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.How many broadcast domains exist in theexhibited topology？（）

what is the advantage of policing opposite to shaping？

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