Multiprocessing, parallel processing, and grid computing

What fundamental hardware component provides the processor with a working storage area to hold program instructions and data?
What is the role of the processor of a computer?
Explain the difference between multiprocessing, parallel processing, and grid computing.
The single-user portable class of computers includes which commonly used four subclasses of computers?
Which class of computer includes servers, mainframes, and supercomputers?
What subclass of computer is a low-cost, centrally managed computer with no internal or external attached drives for data storage?
Identify three features that distinguish tier 1, 2, 3, and 4 data centers.
State three primary goals of the “green computing” program.