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？（）

In an iostat report， which of the following options best describes the value of % tm_act？（）

Which of the following is true about rmss？（）

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

If percentage of RAM occupied by file pages falls below minperm， page replacement algorithm steals pages from （）

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

After issuing the nfsstat -rs command， the null received column starts to grow. This indicates which of the following conditions？（）

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 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？（）

To examine the Exhibit， press the Exhibit button. Using the "ps -mo THREAD" output as shown in the exhibit， which of the following conclusions is most appropriate to draw？（）