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 tool is based on the AIX trace facility？（）

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

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？（）

When setting up schedules and enforcing scheduling of different types of workloads， which of the following are critical performance issues？（）

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

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？（）

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？（）

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？（）

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