单选题You are an Oracle DBA responsible for an ASM instance. The disk controller on your system fails. You suspect that the disk itself is okay. You know it will take 24 hours to replace the controller and you don’t want to have to rebuild the disks from scr

第1题：

You are maintaining the SALES database on Oracle 10g. You have added a new disk to a disk group. Automatic Storage Management performs the rebalancing activity. You want to speed up the rebalancing activity. Which parameter will you specify to control the speed of the rebalancing activity？ （） 

• A、 ASM_POWER_LIMIT
• B、 ASM_DISKSTRING
• C、 ASM_DISKGROUPS
• D、 LARGE_POOL_SIZE

第2题：

You are an Oracle DBA responsible for an ASM instance. The disk controller on your system fails. You suspect that the disk itself is okay. You know it will take 24 hours to replace the controller and you don’t want to have to rebuild the disks from scratch.  What do you do？（）  

• A、 Take the whole disk group offline and wait for the controller card to be installed. Once it’s installed，bring the disk group online again.
• B、 Change the ASM parameter ASM_PREFERRED_READ_FAILURE_GROUPS to indicate that you want to read from the non-failed disk. Once the disk controller is replaced，reset the parameter to  its original value.
• C、 You have no choice but to rebuild the disk. Drop the disk from the disk group and wait for the controller to be replaced. Once the controller is replaced， add the disk back into the disk group and allow ASM to rebuild it.
• D、 If you are using any setting other than REDUNDANCY EXTERNAL for your disk group，you will have to recover any data on that disk from a backup. The database will be unavailable until you can  correct the problem and perform recovery.
• E、 Change the attribute DISK_REPAIR_TIME on the disk group to a time greater than 24 hours.

第3题：

Your database is configured on non-ASM disk storage. You need to migrate your database to ASM disk storage.  Which statement is true about migrating from non-ASM disk storage to ASM disk storage？（） 

• A、 You can use the operating system utility to migrate from non-ASM disk storage to ASM disk storage.
• B、 You cannot perform a database backup from non-ASM disk storage to tape and then move it to ASM disk storage.
• C、 You can use the SWITCH DATABASE TO COPY Recovery Manager （RMAN） command to switch back to non-ASM disk storage if you have not deleted your original datafiles.
• D、 You cannot use Recovery Manager （RMAN） to migrate from non-ASM disk storage to ASM disk storage if you are not using RMAN for your backup and recovery strategies.

第4题：

You are the network administrator  for  You manage a Windows 2003 computer named TestKing3 that functions as a file server. The data volume on TestKing3 is mirrored. Each physical disk is on a separate controller. One of the hard disks that contains the data volume fails. You discover that the failure was caused by a faulty SCSI controller. You replace the SCSI controller. You need to restore the data volume to its previous state. You want to achieve this goal by using the minimum amount of administrative effort. What should you do?（）

• A、Run the diskpart active command on the failed volume
• B、Convert both disks to basic disks, and then restore the data.
• C、Break the mirror, and then re-create the mirror.
• D、Select a disk in the mirror, and then reactivate the volume.

第5题：

Your company has a domain controller server that runs the Windows Server 2008 R2 operating  system. The server is a backup server. The server has a single 500-GB hard disk that has three  partitions for the operating system， applications， and data. You perform daily backups of the  server.     The hard disk fails. You replace the hard disk with a new hard disk of the same capacity. You  restart the computer on the installation media. You select the Repair your computer option.     You need to restore the operating system and all files.     What should you do（）

• A、Select the System Image Recovery option.
• B、Run the Imagex utility at the command prompt.
• C、Run the Wbadmin utility at the command prompt.
• D、Run the Rollback utility at the command prompt.

第6题：

Your company has a domain controller that runs Windows Server 2008. The server is a backup server. The server has a single 500-GB hard disk that has three partitions for the operating system， applications， and data. You perform daily backups of the server. The hard disk fails. You replace the hard disk with a new hard disk of the same capacity. You restart the computer on the installation media. You select the Repair your computer option. You need to restore the operating system and all files. What should you do（）

• A、Select the Startup repair option.
• B、Select the System restore option.
• C、Run the Rollback utility at the command prompt.
• D、Run the Wbadmin utility at the command prompt.

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第13题：

You are managing an ASM instance. You previously issued the following statements: ALTER DISKGROUP dg1 DROP DISK disk2; ALTER DISKGROUP dg1 DROP DISK disk3; ALTER DISKGROUP dg1 DROP DISK disk5; You want to cancel the disk drops that are pending for the DG1 disk group. Which statement should you issue?（）

• A、ALTER DISKGROUP dg1 UNDROP disk2, disk3, disk5;
• B、ALTER DISKGROUP dg1 UNDROP;
• C、ALTER DISKGROUP dg1 UNDROP DISKS;
• D、You cannot cancel the pending disk drops.

第14题：

You are the Database Administrator for WonderWeb， which has recently acquired a media company TXGlobal. You have been assigned the task to migrate all the database applications of TXGlobal to the database server of WonderWeb. To accommodate more database applications， you need to add disks to the existing disk group. Whenever you add or remove disks from the disk group， Automatic Storage Management （ASM） rebalancing distributes the data evenly across all the disks of the disk group. Which background process performs this actual rebalancing activity， resulting in the movement of data extents in the disk groups？（）  

• A、 ASMB
• B、 ARBn
• C、 RBAL in the ASM instance
• D、 RBAL in the database instance

第15题：

You are a network administrator for your company. All servers run Windows Server 2003. You manage a server that functions as a file server. The data volume on the server is mirrored. Each physical disk is on a separate controller. One of the hard disks that contains the data volume fails. You discover that the failure was caused by a faulty SCSI controller. You replace the SCSI controller. You need to restore the data volume to its previous state. You need to achieve this goal by using the minimum amount of administrative effort. What should you do? （）

• A、Run the diskpart active command to activate the failed volume.
• B、Convert both disks to basic disks, and then restore the data.
• C、Break the mirror, and then re-create the mirror.
• D、Select a disk in the mirror, and then reactivate the volume.

第16题：

You have just added three new hard disks to your Windows 2000 Professional computer. You want to configure all of the disks as two drives. You want the two drives to be as equal in size as possible. You want to configure the non-system drive for the best optimal performance.  What should you do?（）

• A、Extend the system volume onto disk1. Create a single, stripe volume from disk2 and disk3.
• B、Extend the system volume onto disk2. Create a single, stripe volume from disk1 and disk2
• C、Extend the system volume onto disk1. Create a single, spanned volume from disk2 and disk3. 
• D、Extend the system volume onto disk1. Create a single, spanned volume from disk1 and disk2.
• E、Create a single, stripe volume from disk1, disk2, and disk3. 
• F、Create a single spanned volume from disk1, disk2, and disk3. 

第17题：

You are a network administrator for your company. All servers run Windows Server 2003. You manage a server that functions as a file server. The data volume on the server is mirrored. Each physical disk is on a separate controller. One of the hard disks that contains the data volume fails. You discover that the failure was caused by a faulty SCSI controller. You replace the SCSI controller. You need to restore the data volume to its previous state. You need to achieve this goal by using the minimum amount of administrative effort. What should you do?（）

• A、Run the diskpart active command to activate the failed volume.
• B、Convert both disks to basic disks, and then restore the data.
• C、Break the mirror, and then re-create the mirror.
• D、Select a disk in the mirror, and then reactivate the volume.

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