____ is/are logically impossible in a DFD because a process must act on input, shown by an incoming data flow, and produce output, represented by an outgoing data flow.
A) Spontaneous generation
B) Gray holes
C) Black holes
D) All of the above

Question

Quizplus · Accepted Answer

All of the above are logically impossible in a DFD because each represents a violation of the basic principle that a process must have both input and output. Spontaneous generation lacks input, gray holes have insufficient input to produce the output, and black holes have no output.

____ Is/are Logically Impossible in a DFD Because a Process