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

Which of the following tools should be used to display the location of unused physical partitions on a disk drive？（）

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

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

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？（）

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

The system administrator notices that IP packets are not getting forwarded. The system administrator wants to use an AIX machine as an internetwork router over TCP/IP networks. Which of the following commands will allow this change on the fly？（）

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？（）