Question 1

Because a data flow name represents a specific set of data, another data flow that has even one more or one less piece of data must be given a different, unique name.

Accepted Answer

A) True 
 B)False

Question 2

As a rule of thumb, no data-flow diagram should have more than about seven processes on it, because the diagram would be too crowded and difficult to understand.

Accepted Answer

A) True 
 B)False

Question 3

If an input from a source appears on a level-0 diagram, it must:

Accepted Answer

A)  appear on the context diagram. 
B)  be connected to a data flow. 
C)  be connected to a sink. 
D)  be connected to a data store. 
E)  be connected to two entities.

Question 4

Data at rest, which may take the form of many different physical representations, best describes a:

Accepted Answer

A)  source. 
B)  data store. 
C)  data flow. 
D)  process. 
E)  relationship.

Question 5

A data flow can go directly back to the same process it leaves.

Accepted Answer

A) True 
 B)False

Question 6

The part of a decision table that links conditions to actions is the section that contains the:

Accepted Answer

A)  action statements. 
B)  rules. 
C)  condition statements. 
D)  decision stubs. 
E)  relationship stubs.

Question 7

The extent to which information contained on one level of a set of nested data-flow diagrams is also included on other levels refers to:

Accepted Answer

A)  DFD consistency. 
B)  DFD completeness. 
C)  DFD gap proofing. 
D)  DFD flexibility. 
E)  DFD cohesion.

Question 8

A Web site's customer is represented as a source on a data-flow diagram.

Accepted Answer

A) True 
 B)False

Question 9

Match each of the data-flow diagramming symbols with corresponding examples.(Answers may occur more than once.)
-Supplier

Accepted Answer

A) Process 
B) Data flow 
C) Source/sink 
D) Data store

Question 10

Match each of the following terms with its description.
-The work or actions performed on data so that they are transformed, stored, or distributed

Accepted Answer

A) Source/sink 
B) Level-0 diagram 
C) Data flow 
D) Data store 
E) Balancing
F)DFD completeness
G)DFD consistency
H)Level-n diagram
I)Primitive DFD
J)Process
K)Gap analysis

Question 11

The origin and/or destination of data, sometimes referred to as external entities defines:

Accepted Answer

A)  source. 
B)  data store. 
C)  data flow. 
D)  process. 
E)  predecessor.

Question 12

Coupling is the conservation of inputs and outputs to a data-flow diagram process when that process is decomposed to a lower level.

Accepted Answer

A) True 
 B)False

Question 13

The decomposition of Process 1.1 would be shown on a level-1 diagram.

Accepted Answer

A) True 
 B)False

Question 14

For each of the following statements, answer "a" if the statement is a true data-flow diagramming rule, and answer "b" if the rule is false.
-Data can move directly from one data store to another data store.

Accepted Answer

The answer of For each of the following statements, answer...

Question 15

For each of the following statements, answer "a" if the statement is a true data-flow diagramming rule, and answer "b" if the rule is false.
-A process must have both inputs and outputs.

Accepted Answer

The answer of For each of the following statements, answer...

Question 16

Assume we have placed a data store between Process 5.1 and Process 5.5; we would say that these processes are decoupled.

Accepted Answer

A) True 
 B)False

Question 17

What is meant by DFD completeness? What is meant by DFD consistency?

Accepted Answer

The answer of What is meant by DFD completeness? What...

Question 18

If a data flow appears on the context diagram and is also represented on a level-0 diagram, this would be referred to as:

Accepted Answer

A)  leveling. 
B)  flow conservation. 
C)  balancing. 
D)  cohesion. 
E)  coupling.

Question 19

Discuss the guidelines for drawing a DFD.

Accepted Answer

The answer of Discuss the guidelines for drawing a DFD....

Question 20

On a data-flow diagram, a check and payment coupon mailed to the company is represented as a data store.

Accepted Answer

A) True 
 B)False

Exam 6: Structuring System Requirements: Process Modeling

Because a data flow name represents a specific set of data, another data flow that has even one more or one less piece of data must be given a different, unique name.

As a rule of thumb, no data-flow diagram should have more than about seven processes on it, because the diagram would be too crowded and difficult to understand.

If an input from a source appears on a level-0 diagram, it must:

Data at rest, which may take the form of many different physical representations, best describes a:

A data flow can go directly back to the same process it leaves.

The part of a decision table that links conditions to actions is the section that contains the:

The extent to which information contained on one level of a set of nested data-flow diagrams is also included on other levels refers to:

A Web site's customer is represented as a source on a data-flow diagram.

Match each of the data-flow diagramming symbols with corresponding examples.(Answers may occur more than once.) -Supplier

Match each of the following terms with its description. -The work or actions performed on data so that they are transformed, stored, or distributed

The origin and/or destination of data, sometimes referred to as external entities defines:

Coupling is the conservation of inputs and outputs to a data-flow diagram process when that process is decomposed to a lower level.

The decomposition of Process 1.1 would be shown on a level-1 diagram.

For each of the following statements, answer "a" if the statement is a true data-flow diagramming rule, and answer "b" if the rule is false. -Data can move directly from one data store to another data store.

For each of the following statements, answer "a" if the statement is a true data-flow diagramming rule, and answer "b" if the rule is false. -A process must have both inputs and outputs.

Assume we have placed a data store between Process 5.1 and Process 5.5; we would say that these processes are decoupled.

What is meant by DFD completeness? What is meant by DFD consistency?

If a data flow appears on the context diagram and is also represented on a level-0 diagram, this would be referred to as:

Discuss the guidelines for drawing a DFD.

On a data-flow diagram, a check and payment coupon mailed to the company is represented as a data store.