单项选择题 TestKing.com has a server named SQL1 that runs SQL Server 2005 Enterprise Edition.SQL1 has 2 GB of RAM， 1.6 GB of which are used by the default SQL Server database engine instance. The average data growth of all databases combined is 100 MB a month. Users state that report execution times are increasing. You want to assess whether more RAM is needed. You need to use System Monitor to create a counter log that will help you decide whether to add RAM. Which performance object should you add to the counter log？（）

单项选择题 You manage a database named DB1， which is located on a SQL Server 2005 computer. You receive a warning that the drive on which the DB1 log file is located is near capacity.Although the transaction log is backed up every five minutes， you observe that it is steadily growing. You think that an uncommitted transaction might be the cause and you want to investigate. You need to identify both the server process ID and the start time of the oldest active transaction in DB1. What should you do？（）

单项选择题 A full backup of your database named DB1 is created automatically at midnight every day.Differential backups of DB1 occur twice each day at 10：00 and at 16：00. A database snapshot is created every day at noon. A developer reports that he accidentally dropped the Pricelist table in DB1 at 12：30. The last update to Pricelist occurred one week ago. You need to recover the Pricelist table. You want to achieve this goal by using the minimum amount of administrative effort. You must also minimize the amount of data that is lost. What should you do？（）