Which of the following RAID levels provide the best performance for a system where there are mostly writes occurring？（）

单项选择题IfpercentageofRAMoccupiedbyfilepagesfallsbelowminperm，pagereplacementalgorithmstealspagesfrom（）

A. file pages only.
B. computational pages only.
C. either file or computational pages.
D. working segment only.

单项选择题Whichofthefollowingperformancetoolswillworkwithoptimizedcodeandalsoprovidessourcestatementprofiling？（）

A. prof
B. gprof
C. kprof
D. tprof

单项选择题WhichofthefollowingoptionswouldbesthelptoreducepacketfragmentationforaTCPapplicationtransferringlargeamountsofdatabetweenserversacrossapathofmultiplenetworks？（）

A. Adjust Path MTU attributes， using the no command.
B. Adjust the status queue size on the adapters， using the chdev command.
C. Adjust ipforwarding to enabled， using the no command.
D. Adjust tcp_maxburst to enabled， using the no command.

单项选择题Whensettingupschedulesandenforcingschedulingofdifferenttypesofworkloads，whichofthefollowingarecriticalperformanceissues？（）

A. Disk fragmentation
B. Performance results analysis
C. Capacity forecasting and planning
D. Resource contention and availability

单项选择题To examine the Exhibit， press the Exhibit button. Using the output of  lslv  as shown in the exhibit， and given that logical volume lv00 is only located on hdisk0， which of the following conclusions is most appropriate to draw？（）

A. Logical volume lv00 is fragmented on hdisk0
B. Logical volume lv00 size cannot be increased
C. Logical volume lv00 is used for paging space on hdisk0
D. Logical volume lv00 is the only logical volume on hdisk0