As a CCNA candidate,you must have a firm understanding of the IPv6 address structure.Refer to IPv6 address,could you tell me how many bits are included in each filed?（）

what is four ospf area type？

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

R1 will choose which path to reach 10.1.0.0？

aaa架構(gòu)中哪個(gè)是要求用戶輸入用戶名和密碼？

hsrp speak狀態(tài)是什么意思？

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

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

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?（）