When analyzing disk I/O performance， which of the following metrics and/or statistics should be included in the study？（）

单项选择题Whichofthefollowingcommandscanbeusedtocommitappliedfilesets？（）

A. /usr/sbin/installp -C
B. /usr/sbin/inutoc -c
C. /usr/sbin/installp -c
D. /usr/sbin/lsresource -c

单项选择题Thebos.perfpackageispartofthebaseoperatingsystem.PerformanceDiagnostictool，PDT，isapartofbos.perf.AllofthefollowingstatementsaretrueEXCEPT？（）

A. PDT attempts to identify performance problems automatically by collecting and integrating a wide range of performance， configuration and availability data.
B. PDT consists of three components， the collection component comprises a set of programs that periodically collect and record data， the retention component periodically reviews the collected data and discards data that is obsolete， and the reporting component periodically produces a diagnostic report from the current set of historical data.
C. PDT contains  motif-based， AIX licensed programs that can easily access tools for system and network performance tuning， monitoring， and analysis.
D. PDT assesses the current state of a system and tracks changes in workload and performance. It attempts to identify incipient problems and suggest solutions before the problems become critical.

单项选择题AllofthefollowingcomprisethePerformanceToolboxEXCEPT：（）

A. perfmgr
B. perfagent.server
C. perfagent.tools
D. perfagent.client

单项选择题Asmallcompanywouldlikehelpinidentifyinganapparentsystemperformanceproblemonitsinternalmailserver，especiallytodeterminepeakhourusage.Whatwouldbethefirststepinidentifyingtheproblem？（）

A. cd /var/spool/cron/crontabs，uncomment the lines in the adm file， in order to start gathering statistics.
B. cd /var/spool/cron/crontabs； uncomment the lines in the sys file， in order to start gathering statistics.
C. cd /usr/lib/cron/； vi the adm file； startsrc -s sadc
D. cd /usr/lib/cron/； vi the sys file； startsrc -s sadc

单项选择题Wherecantheperfagent.toolsfilesetbefound？（）

A. AIX Base CD
B. AIX BonusPak CD
C. AIX Performance Toolbox product CD
D. Performance AIDE product CD