Computer Basic Information
A sizeable geographical area with communication based on the telephone system is though as

Modulator-Demodulator
All of these
None of these
Wide area network
Local area network

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Computer Basic Information
The term USER INTERFACE refers to-

What the user sees on the screen and how they interact with it.
All of these
The means by which the user interacts with peripheral devices on the computer.
How the operating system responds to user commands

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