單項選擇題Users complain an AIX server is running slow.  Which of the following commands can be run to determine what is consuming systems resources?()

A. tprof
B. lpstat
C. ps aux
D. entstat


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

A. renice 100 {PID}
B. renice -n 20 {PID}
C. renice --20 {PID}
D. renice -n -100 {PID}

2.單項選擇題In an iostat report, which of the following options best describes the value of % tm_act?()

A. The total CPU usage for this drive
B. The bandwidth utilization of the indicated drive
C. It can best be represented by the equation (%iowait - %ioidle)
D. It can best be represented by the equation (kilobytes read/kilobytes written) *100

4.單項選擇題Page replacements algorithm steals file pages only when percent of RAM occupied by filepages()

A. falls below minperm.
B. is between minperm and maxperm.
C. higher than maxperm.
D. lower than maxperm.

5.單項選擇題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?()

A. Increase the number of CPUs.
B. Increase the physical memory.
C. Set the PSALLOC environment variable to ’late’.
D. Set the PSALLOC environment variable to ’early’.

6.單項選擇題If percentage of RAM occupied by file pages falls below minperm, page replacement algorithm steals pages from ()

A. file pages only.
B. computational pages only.
C. either file or computational pages.
D. working segment only.

8.單項選擇題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. Increase the size of the JFS log logical volume so more transacations can be written to this log.
B. Create a second, additional JFS log and have the /mydatabase logical volume point to both JFS logs.
C. Migrate the JFS log device to another physical disk in the same volume group.
D. Only one JFS log device for each volume group can be used.  Use the migratepv command to move the JFS log device to an empty disk in another volume group.

9.單項選擇題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?()

A. Adjust Path MTU attributes, using the no command.
B. Adjust the status queue size on the adapters, using the chdev command.
C. Adjust ipforwarding to enabled, using the no command.
D. Adjust tcp_maxburst to enabled, using the no command.

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