单项选择题 You have a multi-area OSPF network and you’re concerned because one of the sites is havingconnectivity problem to resources in a different area. Which IOS privileged mode command wouldyou enter to confirm that your network：  （A） has a path to its ABR，  （B） has a path to its ASBR， and  （C）the SPF calculation is functional？（）

单项选择题 WhichcommandshouldyouusetoverifywhatnetworksarebeingroutedbyagivenOSPFprocess？（）

多项选择题 Whiletroubleshootingsomeconnectivityissues，youissuethe"showipospfdatabase"inordertoexaminethelinkstatedatabase.WhichthreeofthestatementsbelowaretrueregardingtheOSPFlinkstatedatabase？（）