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单选题
A system is experiencing performance problems. After checking the CPU usage, the problem identified is that the system is "CPU Bound". Which of the following outcomes will determine if there is a possible CPU constraint?（）
A
Low paging
B
High paging
C
Workload manager is not turned on
D
A high run queue length
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A system administrator has run topas on a server. The output shows that the %iowait of the system is 60% and that most of the disk activity is on hdisk0. Which of the following procedures should be performed to fix this problem?（）A、 Replace the hard disk with a faster disk drive. B、 Add another paging space on another hdisk. C、 Spread the data hdisk0 across several hdisks. D、 Nothing, since %iowait is a measurement of CPU time.
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Performance monitoring of a poorly performing system indicates a high level of CPU usage. Which tool can be used to help identify which processes are using excessive CPU resources？（）A、sarB、topasC、iostatD、vmstat
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A user is complaining that they ran out of paging space. Which of the following will address this and provide best performance（）A、Expand the default paging space to the largest possible sizeB、Create a new larger paging spaceC、Create additional paging spaces of equal size on different disksD、Reboot system
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A user reports that their PC is making a strange noise. Which of the following is the cause of the problem?（）A、A network cable is vibrating against the system case.B、An internal wire is improperly routed and is hitting the CPU fan.C、The thermal grease on the CPU has dried out and needs to be replaced.D、The CPU needs to be reseated.
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After completing an installation of new software， a system administrator notices the system is slow. To troubleshoot the performance， which single AIX command could be used to provide a real-time display of CPU， memory and disk utilization（）A、topasB、vmoC、iostatD、netstat
考题
Which of the following outputs will best indicate if a system is CPU bound?（）A、 %idle 10% B、 %usr + %sys 80% C、 %sys + %wio 80% D、 %wio + %idle 80%
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Which of the following commands should be used to determine which disk of a system is experiencing a disk I/O performance problem？（）A、 filemonB、 istatC、 vmstatD、 iostat
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A customer indicates that a system is experiencing printing problems. After checking the system, and successfully printing, no problem has been found. Which of the following procedures should be performed next to further clarify the problem?（）A、 Reboot the system.B、 Check the file system sizes.C、 Have the customer repeat the task to recreate the problem.D、 Inform the customer that no problems were found， and to call back if the problem reoccurs.
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A system administrator has a server that is performing poorly. The vmstat command identifies that high CPU usage is the problem. Which of the following commands can be used to identify the eight most active processes running on the server？（）A、ps -ef -t8B、sar -u -p 8C、vmstat -t 8D、topas -p8 -n0 -d0
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A system administrator is monitoring a system that has recently shown a decrease in performance.The administrator suspects that the system may be low on memory and may be paging excessively.Which of the following commands is best to identify a possible paging problem？（）A、iostatB、netstatC、psD、vmstat
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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？（）A、 foo ； lsps -sB、 tprof -kx ； fooC、 iostat ； foo ； iostatD、 vmstat -s ； foo ； vmstat s
考题
A system is experiencing performance problems. After checking the CPU usage, the problem identified is that the system is "CPU Bound". Which of the following outcomes will determine if there is a possible CPU constraint?（）A、 Low paging B、 High paging C、 Workload manager is not turned on D、 A high run queue length
考题
单选题A system administrator ran the iostat command because of system performance problems. The following iostat output is provided： Based on the output， which of the following is insufficient？（）A
CPUB
MemoryC
Paging spaceD
Disk capacityX
考题
单选题A system administrator has a server that is performing poorly. The vmstat command identifies that high CPU usage is the problem. Which of the following commands can be used to identify the eight most active processes running on the server？（）A
ps -ef -t8B
sar -u -p 8C
vmstat -t 8D
topas -p8 -n0 -d0
考题
单选题A user reports that their PC is making a strange noise. Which of the following is the cause of the problem?（）A
A network cable is vibrating against the system case.B
An internal wire is improperly routed and is hitting the CPU fan.C
The thermal grease on the CPU has dried out and needs to be replaced.D
The CPU needs to be reseated.
考题
单选题A customer indicates that a system is experiencing printing problems. After checking the system, and successfully printing, no problem has been found. Which of the following procedures should be performed next to further clarify the problem?（）A
Reboot the system.B
Check the file system sizes.C
Have the customer repeat the task to recreate the problem.D
Inform the customer that no problems were found， and to call back if the problem reoccurs.
考题
单选题Which of the following commands should be used to determine which disk of a system is experiencing a disk I/O performance problem？（）A
filemonB
istatC
vmstatD
iostat
考题
单选题A user is complaining that they ran out of paging space. Which of the following will address this and provide best performance（）A
Expand the default paging space to the largest possible sizeB
Create a new larger paging spaceC
Create additional paging spaces of equal size on different disksD
Reboot system
考题
单选题In a system with high CPU utilization， which of the following will help the MOST to minimize the performance impact of parity overhead in RAID 5？（）A
Use all SAS DrivesB
Triple Channel RAMC
Use all Solid State DrivesD
Hardware RAID Controller
考题
单选题Which of the following outputs will best indicate if a system is CPU bound?（）A
%idle 10% B
%usr + %sys 80% C
%sys + %wio 80% D
%wio + %idle 80%
考题
单选题A system administrator has run topas on a server. The output shows that the %iowait of the system is 60% and that most of the disk activity is on hdisk0. Which of the following procedures should be performed to fix this problem?（）A
Replace the hard disk with a faster disk drive. B
Add another paging space on another hdisk. C
Spread the data hdisk0 across several hdisks. D
Nothing, since %iowait is a measurement of CPU time.
考题
单选题A system administrator is monitoring a system that has recently shown a decrease in performance.The administrator suspects that the system may be low on memory and may be paging excessively.Which of the following commands is best to identify a possible paging problem？（）A
iostatB
netstatC
psD
vmstat
考题
单选题Performance monitoring of a poorly performing system indicates a high level of CPU usage. Which tool can be used to help identify which processes are using excessive CPU resources？（）A
sarB
topasC
iostatD
vmstat
考题
单选题After completing an installation of new software， a system administrator notices the system is slow. To troubleshoot the performance， which single AIX command could be used to provide a real-time display of CPU， memory and disk utilization（）A
topasB
vmoC
iostatD
netstat
考题
单选题While monitoring a system that is CPU bound， which of the following output is most likely to occur？（）A
AB
BC
CD
D
考题
单选题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？（）A
foo ； lsps -sB
tprof -kx ； fooC
iostat ； foo ； iostatD
vmstat -s ； foo ； vmstat s
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