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21. A protocol that specifies how a personal computer can connect to a mail server on the Internet and download E-mail is known as
Post office protocol
System protocol
Network protocol
None of these
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22. Which of the following is not true of a magnetic disk?
Users can update records by writing over the old data
It provides sequential access to stored data
It is slow relative to magnetic tape
All of the above are true
23. Following is true for the digital computer
Information is in form of a string of binary digits
It can be used as analog processor
It is less accurate than the analog computer
None of these.
24. CPU performs read/write operations at any point in time in
ROM
PROM
EPROM
RAM
25. Following is not the form of secondary storage
Magnetic tape
CDs
Scanner
Hard disk
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