what is four ospf area type？

QoS Mechanisms：問在部署QoS中要用的3個mechanisms是什么？

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?（）

SPT初始狀態(tài)之后的一個狀態(tài)是什么？

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

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?（）

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

R1 will choose which path to reach 10.1.0.0？

當(dāng)將多個交換機加入到MST region當(dāng)中會發(fā)生什么（what happen）？

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