单项选择题
A. bos.perf
B. bos.acct
C. bos.adt.samples
D. perfagent.tools
单项选择题 Howarehardwareerrorsremovedfromanerrorreportthataremorethan30daysold？（）
单项选择题 Whenasystemhasbothonlinetransactionprocessingaswellaslargebatchprocessing，whichofthefollowingcommonprocedureswillbesthelptoimprovesystemperformance？（）
单项选择题 DataistransferredbetweentwoserversusingNFS，whereoneserverisconfiguredwithtokenring，andtheothersystemisconfiguredwithethernet.Itisdiscoveredthattheperformanceisgreatlyreducedduringthistransfer.Whichofthefollowingstepsshouldbetakentoimproveperformance？（）