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

Which of the following commands should be used to tune parameters of devices that are displayed with lsattr？（）

Which of the following logical volume placement policies is likely to give the best performance in most cases， all other factors being equal？（）

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

In AIX 5L and later， the operating system supports the /proc filesystem. What would be the best description of the /proc filesystem？（）

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

Which of the following is true about rmss？（）

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？（）

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

Which command series should be used to determine whether file paging or paging space paging is a problem when running a program from an idle system？（）