Operating System (OS)
The function of Dir/W is

Show all details of file
Shows only directory
All of the listed here
Show only file name and directory name

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Operating System (OS)
The term "operating system" means

the way a computer operator works
a set of programs which controls computer working
None of these
conversion of high level language into machine code
the way a floppy disk drive operates

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Operating System (OS)
Backups should be done

weekly for most installations
as several incrementals, followed by an image copy
daily for most installations
as several image copies, followed by an incremental
None of these

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