單項選擇題

You work in a company which uses SQL Server 2008. You are the administrator of the company database. Now you are in charge of a SQL Server 2008 Enterprise Edition instance. There is a database named DB1 in the instance. A backup of DB1 is performed every day. You have to minimize the size of the full database backup files of DB1.
In the options below, which Transact-SQL statement should you use? （）

A.BACKUP DATABASE DB1 TO DISK = 't:\backups\db1.bak';
B.BACKUP DATABASE DB1 TO DISK = 't:\backups\db1.bak' WITH COMPRESSION;
C.BACKUP DATABASE DB1 TO DISK = 't:\backups\db1.bak' WITH DIFFERENTIAL;
D.BACKUP DATABASE DB1 TO DISK = 't:\backups\db1.bak' WITH COMPRESSION,DIFFERENTIAL;

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單項選擇題

You work in a company which uses SQL Server 2008. You are the administrator of the company database. Now you are in charge of a SQL Server 2008 instance. There is a database named DB1 in the instance. The latest differential backup is performed at 15:30, the full back up was performed at 13:30, and database snapshots were created at 16:30 and at 17:30. The backups and the database snapshots are stored on a different disk from the database files. At 17:05, the hard disk containing the database files fails at 17:02 hours. You must restore DB1 while reduce data loss to the least.
So what action should you perform to achieve this goal? （）

A.You should restore the full backup
B.You should restore the database snapshot from 16:30 hours.
C.You should restore the database snapshot from 17:30 hours
D.You should restore both the full backup and the differential backup.

單項選擇題

You work in a company which is named Wiikigo Corp. The company uses SQL Server 2008. You are the administrator of the company database. Now you are in charge of a SQL Server 2008 instance. There is a database named DB1 in the instance. At present about 90 GB of data is stored in DB1. You made some rough calculations that every day about 1 GB of data is modified or inserted. You set the recovery model of DB1 to Simple. According to the company requirements, during business hours, data loss of more than 120 minutes worth of transactions is unacceptable. You have to choose a backup strategy which must comply with the following two requirements: Using as little disk space as possible Complying with the company requirements. So what action should you perform to achieve this goal?（）

A.A full database backup should be performed once daily. During business hour, a transaction log backup should be performed every two hours.
B.A full database backup should be performed once daily
C.A full database backup should be performed once daily. During business hours, a differential backup should be performed every two hours
D.Perform a full database backup should be performed once every week. A differential backup should be performed once daily. During business hours a transaction log backup should be performed every two hours.