Question 1

Which of the following is True regarding the context diagram?

Accepted Answer

A)  The process symbol is labeled "0." 
B)  The context diagram contains two processes. 
C)  Data stores must be shown on the context diagram. 
D)  The internal workings of the system are shown on the context diagram. 
E)  The context diagram organizes the processes in a tree-like structure.

Question 2

Data in motion, moving from one place in a system to another, best describes a:

Accepted Answer

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

Question 3

Briefly describe the data-flow diagramming symbols. Provide one example of each.

Accepted Answer

The answer of Briefly describe the data-flow diagramming symbols. Provide...

Question 4

Data cannot move directly from a source to a sink.

Accepted Answer

A) True 
 B)False

Question 5

The work or actions performed on data so that they are transformed, stored, or distributed defines:

Accepted Answer

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

Question 6

A fork in a data flow means that exactly the same data go from a common location to two or more different processes, data stores, or sources/sinks.

Accepted Answer

A) True 
 B)False

Question 7

Data-flow diagrams evolve from the more general to the more detailed as current and replacement systems are better understood.

Accepted Answer

A) True 
 B)False

Question 8

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 9

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 10

Having a level-1 diagram with no level-0 diagram is an example of a:

Accepted Answer

A)  violation of completeness. 
B)  violation of consistency. 
C)  balancing error. 
D)  structuring violation. 
E)  cohesion error.

Question 11

If two processes are connected by a data flow, they are said to:

Accepted Answer

A)  exhibit cohesion. 
B)  share the same data. 
C)  be coupled to each other. 
D)  be strapped to each other. 
E)  be intertwined.

Question 12

Assume shipment data are entered into a logbook once shipments are received at the company's warehouse; the logbook is represented on a data-flow diagram as a sink.

Accepted Answer

A) True 
 B)False

Question 13

Briefly discuss how DFDs can be used as analysis tools.

Accepted Answer

The answer of Briefly discuss how DFDs can be used...

Question 14

When constructing data-flow diagrams, you should show the interactions that occur between sources and sinks.

Accepted Answer

A) True 
 B)False

Question 15

The decomposition of Process 2.4.3.4 would be shown on a level-4 diagram.

Accepted Answer

A) True 
 B)False

Question 16

A miracle process is one that:

Accepted Answer

A)  has only inputs. 
B)  has only outputs. 
C)  cannot be exploded further. 
D)  has insufficient inputs to produce the associated processes. 
E)  is connected directly to a source.

Question 17

The process of discovering discrepancies between two or more sets of data-flow diagrams or discrepancies within a single DFD is referred to as:

Accepted Answer

A)  requirements structuring. 
B)  logic modeling. 
C)  DFD validation. 
D)  gap analysis. 
E)  DFD stress testing.

Question 18

A data flow to a data store means update.

Accepted Answer

A) True 
 B)False

Question 19

Since data-flow diagrams concentrate on the movement of data between processes, these diagrams are often referred to as:

Accepted Answer

A)  process models. 
B)  data models. 
C)  flow models. 
D)  flow charts. 
E)  logic models.

Question 20

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

Exam 6: Structuring System Requirements: Process Modeling

Which of the following is True regarding the context diagram?

Data in motion, moving from one place in a system to another, best describes a:

Briefly describe the data-flow diagramming symbols. Provide one example of each.

Data cannot move directly from a source to a sink.

The work or actions performed on data so that they are transformed, stored, or distributed defines:

A fork in a data flow means that exactly the same data go from a common location to two or more different processes, data stores, or sources/sinks.

Data-flow diagrams evolve from the more general to the more detailed as current and replacement systems are better understood.

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

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

Having a level-1 diagram with no level-0 diagram is an example of a:

If two processes are connected by a data flow, they are said to:

Assume shipment data are entered into a logbook once shipments are received at the company's warehouse; the logbook is represented on a data-flow diagram as a sink.

Briefly discuss how DFDs can be used as analysis tools.

When constructing data-flow diagrams, you should show the interactions that occur between sources and sinks.

The decomposition of Process 2.4.3.4 would be shown on a level-4 diagram.

A miracle process is one that:

The process of discovering discrepancies between two or more sets of data-flow diagrams or discrepancies within a single DFD is referred to as:

A data flow to a data store means update.

Since data-flow diagrams concentrate on the movement of data between processes, these diagrams are often referred to as:

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