单项选择题
A. DB2 is the underlying database manager
B. Data is compressed without any change to the database
C. SSD drives are now required allowing for faster database access
D. Deduplication within the database shrinks the size of the current database
单项选择题 TheSystemStorageProductivityCentercanmanagewhichofthefollowingIBMtapedevices?（）
单项选择题 IBMTivoliStorageProductivityCenterforDiskcanmanageanystoragedevicethatemployswhatfeature?（）
单项选择题 AstoragespecialistispresentingDS5300andmentionsthatthemaximumavailablecacheis64GB.Thecustomerasksifthatcacheisbackeduptoharddrivesintheeventofapoweroutage.Fromthefollowinglist,whichcompetitorismostlikelyalsotalkingtothiscustomer?（）