Refertotheexhibit.IftherouterCiscoreturnsthegivenoutputandhasnothaditsrouterIDsetmanually,whatvaluewillOSPFuseasitsrouterID?（）
A. 192.168.1.1
B. 172.16.1.1
C. 1.1.1.1
D. 2.2.2.2
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线路中断，行李包裹收货人在中途站要求领取时，应退还（）与发站至领取站应收运费的差额。
A. 已收运费
B. 全部运费
C. 部分费用
Area Border Router （ABR） is a router located on the border of one or more OSPF areas that connect those areas to the backbone network. An ABR will inject a default route into which two types of areas？（）
Area 0
B. NSSA
C. Totally stubby
D. Stub
WhichstatementdescribestheprocessIDthatisusedtorunOSPFonarouter?（）
A. Itislocallysignificantandmustbethesamethroughoutanarea
B. ItisgloballysignificantandisusedtorepresenttheASnumber
C. ItislocallysignificantandisusedtoidentifyaninstanceoftheOSPFdatabase
D. ItisgloballysignificantandisusedtoidentifyOSPFstubareas
Which two statements are true about the role of split horizon？（）
A. It is a function used by routing protocols to install routes into routing table
B. It is a function that prevents the advertising of routes over an interface that the router is usingto reach a route
C. Its function is to help avoid routing loops.
D. It is a redistribution technique used by routing protocols
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