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？（）

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

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？（）

An AIX system administrator needs to adjust the maximum amount of memory that can be pinned. Which of the following commands is used to make the change？（）

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 phrases is TRUE regarding monitoring disk I/O with iostat？（）

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 tune parameters of devices that are displayed with lsattr？（）

Which of the following metrics provided by the iostat report is used to initially determine if a disk is I/O bound？（）

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