Which type of the backup process backs up files that have been modified since the last time all data was backed up?(72 )
A. Incremental backup
B. Full backup
C. Partial backup
Differential backup
图电路中,R1=1Ω,R2=2Ω,Us=1V,Is=2A,已知电流源产生功率PIs=12W,试确定rm值。
(5 )磁盘阵列存储有校验数据,可提供数据容错能力
A. RAID5
B. RAID2
C. RAID1
D. RAID0