Computer Basic Information
Arithmetic logic unit I.   perform arithmetic operations II.  store data III. perform comparison IV.  communicate with input devices from above the correct one is

II only
I and II only
I only
I and III only

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Computer Basic Information
What is the main difference between a mainframe and a super computer?

Supercomputers are focused to execute few programs as fast as possible while mainframe uses its power to execute as many programs concurrently.
Super computer is much larger than mainframe computers.
Supercomputers are focused to execute as many programs as possible while mainframe uses its power to execute few programs as fast as possible.
Super computers are much smaller than mainframe computers.
None of these

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