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System Analysis and Design

System Analysis and Design
Which of the following symbols is (are) not the Data Flow Diagram (DFD):

a triangle
a circle
a square
an open rectangle
a bubble

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System Analysis and Design
Structured design methodology is an approach to design that adheres to rales based on principles such as

top-down refinement
bottom-up design
None of these
All of these
data flow analysis

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System Analysis and Design
Which of the following is not considered as a tool at the system design phase?

piechart
systems flowchart
data-flow diagram
decision table

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System Analysis and Design
Decision tree uses

pictorial depictation of alternate conditions
consequences of various depicted alternates
all of the listed here
nodes and branches

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System Analysis and Design
An indexed file offers the facility of a Random file and the access method of a

direct access file
random access file
Sequential file
None of these
indexed file

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System Analysis and Design
The black box concept is based on the assumption(s) that;

the suprasystem is stable
All of these
the relationship between the inputs and output is stable
black boxes are dependent or environments
None of these

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