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 system administrator would like to set a system to reboot after a crash.  What is the best way to do this？（）

Which of the following options would best help to reduce packet fragmentation for a TCP application transferring large amounts of data between servers across a path of multiple networks？（）

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

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

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

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

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

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