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

R1 will choose which path to reach 10.1.0.0？

A network administrator is troubleshooting the OSPF configuration of routers R1 and R2.The routers cannot establish an adjacency relationship on their common Ethernet link.The graphic shows the output of the show ip ospf interface e0 command for routers R1 and R2.Based on the information in the graphic,what is the cause of this problem?（）

When upgrading the IOS image,the network administrator receives the exhibited error message.What could be the cause of this error?（）

Local Preference？

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

what is four ospf area type？

What is the three main step of using the QoS feature with MQC command line interface？

DHCP SERVER在給一個網(wǎng)段設(shè)置POOL時，該網(wǎng)段路由器接口地址能不能放入POOL，能why，不能why。

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