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单选题
When analyzing disk I/O performance， which of the following metrics and/or statistics should be included in the study？（）
A
Disk size， stock availability， VHDCI
B
Disk size， distance， temperature， and compatibility
C
Disk fragmentation， MTBF， and maintenance
D
Disk configuration， throughput， transactions， queues， and latencies
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考题
Which of the following statements is mot correct about mirroring?()
A.Mirroring, with the write-verify option turned on, can be used to increase performance.B.Mirroring is a better choice that disk-striping, for large sequential-access file system when one is looking for performance.C.Mirroring, with a parallel-scheduling policy, may improve I/O read-operation performance.D.Mirroring, with maximum inter-disk allocation policy, is used to enhance availability.
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Which of the following commands should be used to monitor disk utilization during the time a system is experiencing a disk I/O performance problem？（）A、 istatB、 topasC、 vmstatD、 filemon
考题
Which of the following can be used when installing the OS without a boot disk？（）A、ZFSB、VMFSC、PXED、PBX
考题
Which of the following is a speed enhancement in Windows performance when searching for files?（）A、IndexingB、FormattingC、Disk CleanupD、System Restore
考题
Which of the following metrics provided by the iostat report is used to initially determine if a disk is I/O bound？（）A、 tinB、 toutC、 % idleD、 % tm_act
考题
Which of the following commands can an operator use to view disk performance details?（）A、topas -DB、topas -RC、topas -CD、topas -d
考题
When the length of the run queues， process or thread dispatches interrupts， and lock contention metrics and statistics are analyzed for performance， which of the following resources is being analyzed？（）A、 CPUB、 MemoryC、 Disk I/OD、 Network I/O
考题
Which of the following phrases is TRUE regarding monitoring disk I/O with iostat？（）A、 The iostat can only be run as the root userB、 There could be zero percent I/O wait and still be an I/O bottleneckC、 Any I/O wait time displayed in output of "iostat" is an indication of severe I/O bottlenecks D、 Running "iostat" without any arguments/parameters is sufficient for resolving I/O bottlenecks
考题
A specialist is monitoring performance on a server. The data is on another partition within the same array as the OS. The following information is available： （1）The average record written to disk is 16KB （2）The I/O block size is 2KB （3）The stripe size on the RAID array is 16KB Which of the following will improve performance without rebuilding the operating system？（）A、Change the I/O block size to match the RAID Stripe size.B、Change the RAID stripe size to match the I/O block size.C、Change the record size of the database to match the RAID stripe size.D、Change the record size of the database to match the I/O transfer rate.
考题
In order to determine how efficiently an application is reading and writing data， which of the following utilities will report read and write sizes on disk I/O requests？（）A、 tprofB、 iostatC、 svmonD、 filemon
考题
When analyzing disk I/O performance， which of the following metrics and/or statistics should be included in the study？（）A、 Disk size， stock availability， VHDCIB、 Disk size， distance， temperature， and compatibilityC、 Disk fragmentation， MTBF， and maintenanceD、 Disk configuration， throughput， transactions， queues， and latencies
考题
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
An administrator is ordering a new Power 550. They will mirror rootvg and are concerned about single points of failure. Which of the following features should be ordered（）A、Dual I/O planar， dual disk drives， dual SCSI adaptersB、Dual disk drive enclosures， dual disk drives， extra media bayC、Dual disk drive enclosures， dual disk drives and dual SCSI adaptersD、Dual I/O planar， extra media bay， dual disk drives
考题
When setting up schedules and enforcing scheduling of different types of workloads， which of the following are critical performance issues？（）A、 Disk fragmentationB、 Performance results analysisC、 Capacity forecasting and planningD、 Resource contention and availability
考题
Which of the following statements is mot correct about mirroring?（）A、Mirroring, with the write-verify option turned on, can be used to increase performance.B、Mirroring is a better choice that disk-striping, for large sequential-access file system when one is looking for performance.C、Mirroring, with a parallel-scheduling policy, may improve I/O read-operation performance.D、Mirroring, with maximum inter-disk allocation policy, is used to enhance availability.
考题
Which system resources does WLM have the capability to control?（）A、 CPU, Memory and Network I/O B、 CPU, Memory and Disk I/O C、 CPU and Memory D、 CPU and Disk I/O
考题
Examine the following command: ALTER DISKGROUP data MOUNT FORCE; In which scenario can you use the above command to mount the disk group? （）A、when ASM disk goes offlineB、when one or more ASM files are droppedC、when some disks in a disk group are offlineD、when some disks in a failure group for a disk group are rebalancing
考题
单选题Which of the following commands should be used to monitor disk utilization during the time a system is experiencing a disk I/O performance problem？（）A
istatB
topasC
vmstatD
filemon
考题
单选题When setting up schedules and enforcing scheduling of different types of workloads， which of the following are critical performance issues？（）A
Disk fragmentationB
Performance results analysisC
Capacity forecasting and planningD
Resource contention and availability
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Which of the following phrases is TRUE regarding monitoring disk I/O with iostat？（）A
The iostat can only be run as the root userB
There could be zero percent I/O wait and still be an I/O bottleneckC
Any I/O wait time displayed in output of iostat is an indication of severe I/O bottlenecks D
Running iostat without any arguments/parameters is sufficient for resolving I/O bottlenecks
考题
单选题Which of the following metrics provided by the iostat report is used to initially determine if a disk is I/O bound？（）A
tinB
toutC
% idleD
% tm_act
考题
单选题Which system resources does WLM have the capability to control?（）A
CPU, Memory and Network I/O B
CPU, Memory and Disk I/O C
CPU and Memory D
CPU and Disk I/O
考题
单选题When the length of the run queues， process or thread dispatches interrupts， and lock contention metrics and statistics are analyzed for performance， which of the following resources is being analyzed？（）A
CPUB
MemoryC
Disk I/OD
Network I/O
考题
单选题A customer is experiencing a performance bottleneck in a disk subsystem. The server is performing sequential I/O with a small number of users requesting large files. Which of the following would most likely resolve the bottleneck？（）A
Increase seek translationB
Increase data transfer rateC
Decrease rotational latencyD
Increase rotational latency
考题
单选题In order to determine how efficiently an application is reading and writing data， which of the following utilities will report read and write sizes on disk I/O requests？（）A
tprofB
iostatC
svmonD
filemon
考题
单选题You work as a database administrator for Supportcenter.cn. You want to be notified when the number of disk I/O increases by 10% of what it was yesterday. You create a baseline metric for yesterday’s disk I/O performance. How do you use the baseline metrics to achieve your objective？（）A
Save the baseline in the databaseB
Save the baseline in the Database Control Home PageC
Create a procedure to read and apply the baseline to disk I/O metricsD
Apply the baseline to the disk I/O metrics in the Mange Metrics pageE
Alter the disk I/O metrics to include baseline by using the ALTER METRICScommnd
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