单项选择题 RoutersAandBhaveanOC12candaGElinkbetweenthemandarerunningOSPFoverbothoftheselinks.Whichitemiscorrect，assumingthedefaultJUNOSsoftwareOSPFmetriccalculation？（）

多项选择题 YouwanttolimitthenumberofType7LSAstobeconvertedintoType5LSAsatanappropriateARB.Whichtwocommandsshouldyouusefromthe[edit]hierarchylevelwithintheJUNOSsoftwareconfigurationmode？（）

单项选择题 Given the topology displayed in the exhibit.    All links have an OSPF metric of 10.The link between Router A and Router B is in area 0.0.0.0. All other links are in area 0.0.0.1.What does Router A do with packets destined for Network Z？（）