Computer Basic Information
Before a disk drive can access any sector record, a computer program has to provide the record's disk address. What information does this address specify?

All of these
Surface number
Sector number
None of these
Track number

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Computer Basic Information
An essential difference between the operating system that runs a typical desktop computer and the operating system that runs a typical PDA is that .......

the desktop computer has an OS whereas a PDA does not.
the desktop OS can run several programs simultaneously whereas the PDA OS cannot.
None of these
the desktop OS manages hardware resources whereas the PDA OS does not.
the desktop OS has a graphical user interface whereas the PDA OS does not.

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