Which tool is based on the AIX trace facility？（）

A system administrator would like to set a system to reboot after a crash.  What is the best way to do this？（）

Which command series should be used to determine whether file paging or paging space paging is a problem when running a program from an idle system？（）

A system administrator increases the mbuf pool allocation， then runs vmstat. It is noticed that the paging rate has not decreased. What is the most effective option to maintain the mbuf pool and decrease paging？（）

Which of the following performance tools will work with optimized code and also provides source statement profiling？（）

To examine the Exhibit， press the Exhibit button. While a user is compiling a C program， "vmstat 120 10" is run to determine the cause of a performance problem.  Using the vmstat output as shown in the exhibit， which of the following conclusions is most appropriate to draw about the I/O bottleneck？（）

Which of the following commands should be used to tune parameters of devices that are displayed with lsattr？（）

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？（）

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

The system administrator notices that there is an I/O bottleneck on one of three disks in datavg volume group. This problem disk contains the JFS log， loglv00 and one filesystem， /mydatabase.  There are no other logical volumes on this disk.  Which of the following options would be the best solution？（）