单项选择题
Which of the following should be done FIRST to a hard drive before it is disposed?（）
A. Partition
B. Physical damage
C. Data wipe
D. Format
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单项选择题
Which of the following has the HIGHEST connection latency? （）
A.Satellite
B.Cable
C.DSL
D.Dial-up -
单项选择题
Which of the following commands changes a file characteristic so that it cannot be seen with astandard directory query? （）
A. attrib file.txt +h
B. attrib file.txt +r
C. ren file.txt
D. attrib file.txt +s -
单项选择题
Which of the following attributes is set when a file is ready to be backed up?（）
A.a
B.h
C.r
D.s
