单选题A small company has an IBM System x3105 file server. They are looking for an alternative for tape-based backup and disaster recovery for their 80 GB of data. The backup window is 1 to 2 hours using an incremental， 3-cartridge rotation with off-site sto

第1题：

A customer has a requirement for Disaster Recovery for compliance within their industry. Theyhave an RPO of 4 hours and an RTO of 24 hours. Cost is a consideration. What is the most costeffective DR implementation？（）

• A、a disk-to-disk backup solution keeping all storage in the data center
• B、a backup solution that includes magnetic tape that is shipped to an off-site storage facility
• C、a less powerful copy environment at a hot site with asynchronous mirroring and cluster technology
• D、an exact copy of the primary environment at a hot site with remote mirroring and cluster technology

第2题：

Due to operational commitments， a system has a very short backup window during the week， but is not used from Saturday morning through Sunday at Midnight.  Which of the following minimizes backup and recovery time， while providing complete data restore coverage （）

• A、Full backups every month， daily incremental backups
• B、Full backups every month， daily differential backups
• C、Full backup Saturday night， incremental backups the rest of the week
• D、Full backup Saturday night， differential backups the rest of the week

第3题：

Examine the following command used to perform incremental level 0 backup：   RMAN> BACKUP INCREMENTAL LEVEL 0 DATABASE；   To enable the block change tracking， after the incremental level 0 backup you issued the following command：   SQL> ALTER DATABASE ENABLE BLOCK CHANGE TRACKING USING FILE ’/mydir/ rman_change_track.f’；To perform incremental level 1 cumulative backup， you issued the following command：   RMAN> BACKUP INCREMENTAL LEVEL 1 CUMULATIVE DATABASE；   Which two statements are true in the above situation？（）

• A、 The block change tracking data will be used only from the next incremental 0 backup.
• B、 The incremental backup will use change tracking data for accomplishing the backup.
• C、 The incremental backup will not use change tracking data for accomplishing the backup.
• D、 The block track file will scan all the blocks and create bitmap for all the blocks backed up in the level 0 backup.

第4题：

You work as a database administrator for Supportcenter.cn. You are using Recovery Manager （RMAN） for backup and recovery of your database. You executed the delete command in RMAN to delete a backup of a tablespace. Which statement is true in this scenario？（）

• A、The backup status will be marked expired in RMAN recovery catalog.
• B、The backup status will be marked deleted in RMAN recovery catalog after you execute the crosscheck command.
• C、The backup will be deleted physically from the OS （Operating system）and the backup information is removed from the recovery catalogl
• D、The backup status will be marked deleted and you must delete the backup file manually from the OS （Operating system）.
• E、The backup status will be marked deleted and you must delete the backup file manually from the OS （Operating system）， if you are not using Oracle Managed Files （OMF）.

第5题：

You have a file server named Server1 that runs Windows Server 2003 Service Pack 2 (SP2). You enable Shadow Copies on all drives by using the default options. You run a full backup every Monday at 02:00. You run an incremental backup every day at 02:00, except on Monday. On Thursday at 14:00, a user reports that he accidentally deleted a file named File1.doc in a shared folder named //Server1/Data/. The user reports that the file was last updated at 09:00 on Thursday. You need to restore the latest version of File1.doc. What should you restore? （）

• A、the file by using the Previous Versions Client
• B、the file from the full backup performed on Monday
• C、the file from the incremental backup performed on Thursday
• D、the user’s computer by using Automated System Recovery (ASR)

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第13题：

A customer has an IBM System Storage DS8700 at their primary site and an XIV system at their recovery site， which is 9.5 kilometers away. They want to replicate data for disaster recovery backup.  Which factor is a primary consideration when proposing a solution for this customer（）

• A、compatibility of copy functions
• B、difference in capacities in the two systems
• C、cache size discrepancies between the two systems
• D、the necessity of using two storage management products

第14题：

A customer has a large amount of data stored on three database servers and is concerned that at present there is no disaster recovery plan in place.  They have an existing tape backup solution that meets their backup window.  In order to analyze potential disaster recovery plans， which of the following questions is the most important？（）

• A、What is the minimum critical backup window？
• B、Which server is handling the most critical data？
• C、How much data is stored on each server？
• D、What is the throughput of the hard drives？

第15题：

You have issued the following command：    RMAN>CONFIGURE RETENTION POLICY TO RECOVERY WINDOW OF 100 DAYS；   What will be the result of using the above command？（）

• A、 The backup metadata will be maintained in the control file for 100 days.
• B、 The backup metadata will be maintained in the recovery catalog for 100 days.
• C、 The backup metadata will be maintained in the flash recovery area for 100 days.
• D、 After 100 days， the backup sets and image copies will be deleted from the media.

第16题：

You performed a backup of the flash recovery area by using the following command for the first time： RMAN> BACKUP RECOVERY AREA;  Which files in the flash recovery area are backed up？（）

• A、flashback logs
• B、current control file
• C、control file autobackups
• D、incremental backup sets

第17题：

Your network consists of a single Active Directory domain. You have a server named Server1. Server1 has only one hard disk drive. You run a full backup at 02:00 every Monday. You run an incremental backup at 02:00 every Tuesday to Sunday. You run an Automated System Recovery (ASR) backup every day at 13:00. Server1’s hard disk drive fails on Wednesday at 15:00. You need to recover Server1 to its latest configuration by using the minimum amount of administrative effort. What should you restore? （）

• A、Monday’s full backup, then Tuesday’s incremental backup, and then Wednesday’s incremental backup
• B、Monday’s full backup and then Wednesday’s ASR backup
• C、Monday’s full backup and then Wednesday’s incremental backup
• D、Wednesday’s ASR backup

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