单项选择题
Which of the following backup method ologies is MOST time efficient for restoring data？（）
A. Incremental B. Differential C. Full D. GFS
单项选择题 Whichofthefollowingstripesdataattheblocklevelanddoesnothaveadedicateddiskfor parity？（）
单项选择题 Whichofthefollowingisabenefitofahotspare？（）
单项选择题 Whichofthefollowingstripesdataatthebitlevelandusesadedicateddiskforparity？（）
