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?（）

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

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

what is the disadvantage of policing？

SPT初始狀態(tài)之后的一個(gè)狀態(tài)是什么？

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

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

Refer to the exhibit.What is the meaning of the term dynamic as displayed in the output of the show frame-relay map command shown？（）

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?（）