Which of the following commands should be used to determine which disk of a system is experiencing a disk I/O performance problem？（）

单项选择题Whichofthefollowingcommandscanbeusedtocleanupafailedsoftwareinstallationprocess？（）

A. installp -D
B. installp -d
C. installp -C
D. installp -c

单项选择题Whichofthefollowingcommandscanbeusedtoreviewthesystemerrorlogs？（）

A. errpt -a
B. errpt -l
C. errdemon -l
D. syslogd -r

单项选择题ServiceLevelAgreements（SLA）typicallydonotaddress（）

A. Network access and availability
B. Application access and availability
C. Escalation and conflict resolution
D. Headcounts and budgets

单项选择题Using the schedtune output， memory is considered over-committed if：（）

A. more than one process is spinning.
B. more than 4 processes become active.
C. the system schedules more than 16 processes.
D. the pageouts divided by page steals is greater than 1/h.

单项选择题Asystemmustbeevaluatedandtuned.Inordertouseasetofperformanceevaluationprograms（e.g.，filemon，svmon，andtprof）whichofthefollowingpackagesshouldexistonthesysteminquestion？（）

A. bos.adt
B. bos.perf
C. Java.adt
D. perfagent.tools