System Analysis and Design
Pointers are useful in

Traversing a linked list
Pointing mistakes in input data
Locating a particular sector of a magnetic disk
All of these
None of these

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System Analysis and Design
The black-box concept:

assumes that inputs and outputs will remain stable
assumes that the black box is independent
None of these
All of these
is invoked by describing a system in terms of inputs and outputs, leaving the transformation process a black box.

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