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， VHDCIB  Disk size， distance， temperature， and compatibilityC  Disk fragmentation， MTBF， and mainte

第1题：

All of the following are attributes that can be specified when creating a logical volume EXCEPT:（）

• A、Number of logical partitions
• B、Disk where logical volume will reside
• C、Size of the logical volume control block
• D、Position of the logical volume on the disk

第2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、 CPU
• B、 Memory
• C、 Disk I/O
• D、 Network I/O

第3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、 istat
• B、 topas
• C、 vmstat
• D、 filemon

第4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 adapters
• B、Dual disk drive enclosures， dual disk drives， extra media bay
• C、Dual disk drive enclosures， dual disk drives and dual SCSI adapters
• D、Dual I/O planar， extra media bay， dual disk drives

第5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

第6题：

Which of the following metrics provided by the iostat report is used to initially determine if a disk is I/O bound？（）

• A、 tin
• B、 tout
• C、 % idle
• D、 % tm_act

第7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.

第8题：

You have created a baseline metric， DISK_IO_BL， for the disk I/O metrics in your PROD database and you have been getting notifications whenever the database performance degrades. You optimize the database I/O to gain the performance and you decide to remove the baseline metrics. Which method would you use to remove the DISK_IO_BL baseline metrics？（）

• A、The baseline， once created， cannot be removed.
• B、Disable the baseline metrics in the Database Control Manage Metrics page.
• C、The baseline will be automatically removed once the database performance has been optimized.
• D、Drop the baseline metrics by usingDBMS_WORKLOAD_REPOSITORY.DROP_BASELINE procedure.

第9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、 filemon
• B、 istat
• C、 vmstat
• D、 iostat

第10题：

When setting up schedules and enforcing scheduling of different types of workloads， which of the following are critical performance issues？（）

• A、 Disk fragmentation
• B、 Performance results analysis
• C、 Capacity forecasting and planning
• D、 Resource contention and availability