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

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.  Given the vmstat output as shown in the exhibit， which of the following conclusions is most appropriate to draw about the machine？（）

Which of the following commands should be used to monitor the average number of threads in the scheduler’s run queue for any given interval？（）

A TCP/IP application is transferring files from a personal machine to a remote machine.  The application writes 32 kilobytes of data at a time to the socket， but has not issued a system call to set the window size.  Which of the following procedures should be performed on the personal machine to increase the throughput of the application？（）

Which of the following commands is run to adjust the number of free paging-space pages at which AIX begins killing processes？（）

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

Which of the following commands will only provide a snapshot of average memory usage for a process？（）

The nice value is 80 in the ps listing.  Which command is used to change this to a value of 100？（）

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

Which of the following procedures WILL NOT increase contiguous free space on a the filesystem /data1， located on /dev/lv01， that is heavily fragmented？（）