Page replacements algorithm steals file pages only when percent of RAM occupied by filepages（）

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？（）

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？（）

In order to determine how efficiently an application is reading and writing data， which of the following utilities will report read and write sizes on disk I/O requests？（）

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？（）

When monitoring a system using vmstat with an interval， which of the following conclusions should be drawn about the metrics under page pi and page po？（）

Which of the following commands should be used to identify packet sequence problems？（）

Which of the following phrases is TRUE regarding monitoring disk I/O with iostat？（）