A disk scheduling mechanism in an operatingsystem causes the disk arm to sweepback and forth across the disk surface servicing all requests in its path. This is aA.First Come First ServeB.Shortest Seek Time FirstC.ScanD.None of the above
A disk scheduling mechanism in an operatingsystem causes the disk arm to sweepback and forth across the disk surface servicing all requests in its path. This is a
A.First Come First Serve
B.Shortest Seek Time First
C.Scan
D.None of the above
相关考题:
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YouwanttosetthefollowingInitializationparametersforyourdatabaseInstanceLOG_ARCHIVE_DEBT_1=,,LOCATION=/disk1/archLOG_ARCHIVE_DBST_2=,,LOCATION=/disk2/archLOC_ARCHIVBDBST_3=,,LOCATION=/disk3/archLOG_ARCHIVEDBST_=,,LOCATION=/disk3/archIdentifythestatementthatcorrectlydescribesthissetting.()A.TheMANDATORYlocationmustbeaflashrecoveryarea.B.Theoptionaldestinationsmaynotusetheflashrecoveryarea.C.ThissettingisnotallowedbecausethefirstdestinationisnotsetasMANDATORY.D.Theonlineredologfileisnotallowedtobeoverwrittenifthearchivedlogcannotbecreatedinthefourthdestination.
Youhavethefollowingonlineredologconfiguration:GroupMember1’/disk1/oradata/redo01a.log’2’/disk2/oradata/redo02a.log’3’/disk3/oradata/redo03a.log’Youdecidetomultiplextheonlineredologgroupsforrecoveryofredologfilesincaseofanydisaster.WhichtwostatementswillyouNOTissuetomultiplextheonlineredologfiles?()A.ALTERDATABASEADDLOGFILEMEMBER’/disk1/oradata/redo01b.log’TOGROUP1;B.ALTERDATABASEADDLOGFILEMEMBER’/disk2/oradata/redo01b.log’TOGROUP1;C.ALTERDATABASEADDLOGFILEMEMBER’/disk1/oradata/redo02b.log’TOGROUP2;D.ALTERDATABASEADDLOGFILEMEMBER’/disk2/oradata/redo02b.log’TOGROUP2;E.ALTERDATABASEADDLOGFILEMEMBER’/disk1/oradata/redo3b.log’TOGROUP3;F.ALTERDATABASEADDLOGFILEMEMBER’/disk2/oradata/redo3b.log’TOGROUP3;
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