Explain what a diagram 0 is and how it is used.
What will be an ideal response?
Diagram 0 zooms in on the system and shows major internal processes, data flows, and data stores. IT also repeats the entities and data flows that appear in the context diagram. When you expand the context diagram into DFD diagram 0, you must retain all the connections that flow into and out of process 0.
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If dynamically allocated memory is not freed,
A) the system may run out of memory. B) it results in a compiler error. C) a run-time error informs your user that the program did not free memory space. D) the source code will not link correctly. E) None of the above
Which of the following Charms is an icon for the Settings option?
A. 
B. 
C. 
D. 
Pie charts often include percentage data labels
Indicate whether the statement is true or false
In a linked list, we always want head to point to the ____ node.
A. key B. main C. first D. last