Computer Science 307 - Software Engineering - Chapter 6 Questions And Answers 2024
Which of these shapes would be used to show data storage or output in a data flow diagram?
Square []
rectangle [ ]
arrows <-->
Open-ended rectangles [ - ANS-Open-ended rectangles [
Open-ended rectangles a...
Open-ended rectangles are used to show storage or output in a data flow diagram.
Why are data flow diagrams used?
To see the pathway for data
To make current systems more efficient
All of the answers are correct.
To improve current systems - ANS-✔✔All of the answers are correct.
What are data flow diagrams?
None of the answers are correct.
A visual representation of how data flows within a text
A visual representation of the steps in a process, such as the writing process
A visual representation of how data moves within an information system - ANS-✔✔A visual
representation of how data moves within an information system
Which of these shapes would be used to show data inputs?
Square []
rectangle [ ]
arrows <-->
open box [ - ANS-✔✔Square []
, Generally, a square is used to represent data inputs in a data flow diagram.
In a data flow diagram, what happens when the data has been entered?
It interacts within the information system.
It is stored as output.
All of the answers are correct.
It moves through the process. - ANS-✔✔All of the answers are correct.
In the following control flow diagram, what does the vertical bar represent?
O
|
\/
Data condition
Deactivated process
Input or output to the flow
Direct read - ANS-✔✔Input or output to the flow
The dashed arrow in the diagram below indicates what part of the control flow?
O--->O
Direct read of the control
Output from the specification
Condition
Input to the specification - ANS-✔✔Direct read of the control
In this case, the flow goes right from Read Input to Run Process. We didn't need to branch off or do
anything else, so we started the whole thing successfully.
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