[单项选择]A full backup is performed every Sunday and incremental backups are performed daily Monday through Saturday. How many tapes would be required to perform a full restore if a complete failure occurred on Thursday before the incremental backup?（）
A. 2
B. 3
C. 4
D. 5

[单项选择] A full backup is performed every Sunday and incremental backups are performed daily Monday through Saturday.  How many tapes would be required to perform a full restore if a complete failure occurred on Thursday before the incremental backup？（）
A.  2
B.  3
C.  4
D.  5

[单项选择] You performed the RMAN database backup having a backupset key number 231 with the KEEP FOREVER option. After some days, you want to change the status of the database backup and you issued the following command: RMAN>CHANGE BACKUPSET 231 NOKEEP; What is the implication of this command?（）
A. The backup is deleted.
B. The backup is marked unavailable.
C. The backup overrides the backup retention policy.
D. the backup becomes eligible for deletion according to the existing retention policy

[多项选择]You performed the RMAN database backup with the KEEP option.Which two statements are true about this backup?（） (Choose two)
A. The KEEP option overrides the configured retention policy
B. The KEEP option is an attribute of an individual backup piece
C. The backup contains only data files and archived redo log files
D. The backup contains data files, the server parameter file and the control file even if the control file auto backup is disabled

[多项选择] You performed an incremental level 0 backup of a database: RMAN > BACKUP INCREMENTAL LEVEL 0 DATABASE; To enable block change tracking after the incremental level 0 backup, you issued this command: SQL > ALTER DATABASE ENABLE BLOCK CHANGE TRACKING USING FILE ‘ /mydir/rman_change_track.f’; To perform an incremental level 1 cumulative backup, you issued this command: RMAN> BACKUP INCREMENTAL LEVEL 1 CUMULATIVE DATABASE; Which three statements are true?（）
A. Backup change tracking will sometimes reduce I/O performed during cumulative incremental backups.
B. The change tracking file must always be backed up when you perform a full database backup.
C. Block change tracking will always reduce I/O performed during cumulative incremental backups.
D. More than one database block may be read by an incremental backup for a change made to a single block.
E. The incremental level 1 backup that immediately follows the enabling of block change tracking will not read the change tracking file to discover changed blocks.

[单项选择] Marriage Advertisements in India Every Sunday morning millions of Indians settle down with a cup of tea and special weekend issues of their newspapers, just as Americans do. But here, with the marriage season approaching, many of them quickly to a Sunday feature that is particularly Indian-the-columns of marriage advertisements in which young people look for husbands and wives. This is relatively modern change in the age-old custom of the arranged marriage. The thousands of advertisements published each week increasingly reflect social changes that coming to this traditional society. For example, although women are still described in terms of appearance, or skill in "the wifely arts", information about her earning power is entering more and more of the advertisements. This reflects the arrival in India of the working wife. Divorce, which used to be almost unheard of in India, is sometimes now mentioned in the advertisements as in the case of a woman whose advertisement in New Delhi newspaper explained that had been "the innocent party" when her marriage broke up. Because the custom of the dowry (marriage payment) is now illegal, some advertisements say "no dowry" or "simple marriage", which means the same thing. However, the fathers of many bridegrooms still require it. In a land where light skin is often regarded as socially preferable, many also require that a woman have a "wheat-color" complexion or that a man be "tall, fair and handsome". Advertisements are placed and eagerly read by a wide range of people in the upper classes, mostly in cities. Many of them receive dozens of answers."There's nothing embarrassing about it," explained a Calcutta businessman advertising a son-in-law. "It's just another way of broadening the contacts and increasing the possibility of doing the contacts and increasing the possibilities of doing the best one for one's daughter." Because of high unemployment and a generally poor standard of living here, one of the best attractions a marriage advertisement can offer is a permit to live abroad, especially in Canada or the United States. A person who has one can get what he wants. One recent Sunday in Madras, for example, a Punjabi engineer living in San Francisco advertised for a "beautiful slim bride with lovely features knowing music and dance". And a man whose advertisement said that he held an American immigration permit was able to say, only girls from rich, well-connected families need apply. In the text, a Sunday feature is a kind of newspaper advertisements in which young people look for husbands and wives.（）
A. Right
B. Wrong
C. Not mentioned

[单项选择]The library is open every day except Sunday from half past eight in the morning till five in the afternoon.
A. 除了在星期日，图书馆上午八点半起至下午五点止开放外，其余时候全天开放。
B. 除了星期日以外，图书馆每天上午八点半起至下午五点钟打开。
C. 除了星期日以外，图书馆每天上午八点半起至下午五点钟开放。
D. 包括星期日在内，图书馆每天上午八点半起至下午五点钟开放。

[多项选择] 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

[单项选择]Every Sunday， consistent backups are performed on your database. Because of a user error， you performed an incomplete recovery on Tuesday and opened the database with the RESETLOGS option. A user error occurs again on Thursday， which necessitates an incomplete recovery. Sunday’s backup is the most recent backup available. What would you do in this scenario？（）
A. recovery cannot be performed because a backup was not performed after the last incomplete recovery
B. restore all the files from Sunday’s backup， and then perform an incomplete recovery up to the point in time when the user error occurred on Thursday
C. restore all the files from Sunday’s backup， and then recover up to the point in time when the RESETLOGS operation was performed on Tuesday
D. restore all the files from Sunday’s backup， and open the database to reset the database to the point in time when the backup was performed on Sunday

[单项选择]Every Sunday the Unix system administrator has a job that executes a full backup of the entire Unix system your database is on. Is this backup usable for backup and recovery of your database？（）  
A.  Yes， if the database is in ARCHIVELOG mode
B.  Yes， if the database is in NOARCHIVELOG mode
C.  No， the backup is not usable in any way
D.  Only if the ENABLE_ONLINE_BACKUP parameter is set to TRUE