单项选择题
A. perfmgr
B. perfagent.server
C. perfagent.tools
D. perfagent.client
单项选择题 Asmallcompanywouldlikehelpinidentifyinganapparentsystemperformanceproblemonitsinternalmailserver，especiallytodeterminepeakhourusage.Whatwouldbethefirststepinidentifyingtheproblem？（）
单项选择题 Wherecantheperfagent.toolsfilesetbefound？（）
单项选择题 Whenthelengthoftherunqueues，processorthreaddispatchesinterrupts，andlockcontentionmetricsandstatisticsareanalyzedforperformance，whichofthefollowingresourcesisbeinganalyzed？（）