Question 1

Data (like Year-to-date totals)that come from a data store and are used in a process (like 'Calculate YTD Totals')and then the updated amounts are written back to the data store - can be drawn on a DFD model as a two-headed arrow.

Accepted Answer

A) True 
 B)False

Question 2

Vanessa has a data flow diagram with an item called 'Register for Class'.That item would be:

Accepted Answer

A)  A process 
B)  A data flow 
C)  A data store 
D)  An external entity 
E)  A process relationship

Question 3

A data repository is a collection of data that is stored in some way on a DFD.

Accepted Answer

A) True 
 B)False

Question 4

An external entity is:

Accepted Answer

A)  An activity or a function that is performed for some specific business reason 
B)  A single piece of data 
C)  A collection of data 
D)  A trigger to a use case 
E)  A person, organization or system outside of the system

Question 5

What diagram will have processes with one decimal place (like 3.1,3.2,and 3.3)and might have flows coming in (or going out)that are not illustrated?

Accepted Answer

A)  Context diagram 
B)  Level 0 diagram. 
C)  Level 1 diagram 
D)  UML state diagram 
E)  Level 0 diagram

Question 6

Many business processes are too complex to be explained in one DFD.

Accepted Answer

A) True 
 B)False

Question 7

It is possible to decompose level 1 processes even farther,so for example,process 2.1 on a Level 1 DFD might become 2.1A,2.1B,2.1C,etc.

Accepted Answer

A) True 
 B)False

Question 8

Context diagrams show the entire system in context with the environment (like external entities).

Accepted Answer

A) True 
 B)False

Question 9

One important principal in process modeling with DFD's is the decomposition on the business processes into a series of DFD's.

Accepted Answer

A) True 
 B)False

Question 10

A data flow is:

Accepted Answer

A)  An activity of a function that is performed for some specific business reason 
B)  A single piece of data within a system 
C)  A collection of data within a system 
D)  A person, organization or system that is external to the system 
E)  A combination of function and the data it acts upon

Question 11

A payroll data flow diagram has a data-store called Accumulated Salary Data.At one stage in the DFD,a process "Calculate YTD-Taxes" gets data from that data store,updates it in the process,and writes it back out.The diagram should show:

Accepted Answer

A)  A single line with arrows on both ends labeled YTD Payroll Details 
B)  A dashed line with arrows on both ends labeled YTD Payroll Details 
C)  A line out of the data store labeled: Current YTD Payroll Details; and a line into the data store labeled: Updated YTD Payroll Details 
D)  Two separate data flow lines but each with the same name YTD Payroll Details 
E)  Two dashed lines but each with the same name of YTD Payroll Details

Question 12

A well-constructed use case makes developing a data flow diagram fairly straightforward.

Accepted Answer

A) True 
 B)False

Question 13

The major inputs and major outputs listed on the use case provide a list of the sources and destinations of the inflows and outflows on the processes on a DFD.

Accepted Answer

A) True 
 B)False

Question 14

Andrei has a diagram that shows only one process and external entities.He is developing a:

Accepted Answer

A)  Context diagram 
B)  Use case diagram 
C)  Level 0 diagram 
D)  Level 1 diagram 
E)  Level 2 diagram

Question 15

Which Data Flow Diagram shows the entire system with its environment with only one process?

Accepted Answer

A)  Context Diagram 
B)  Level 0 diagrams 
C)  Level 1 diagrams 
D)  Level 2 diagrams 
E)  All DFDs show this

Question 16

On the context diagram,Tim has a process called "Start the Process".It has one output data flow 'Initial Data' and no input data flows.This is:

Accepted Answer

A)  Totally acceptable for a context diagram 
B)  Incorrect for a context diagram, but acceptable on the Level 0 diagram 
C)  Incorrect for both a context and Level 0 diagrams, but acceptable for a Level 1 diagram 
D)  Incorrect for context, level 0, level 1, but acceptable for a level 2 diagram 
E)  Incorrect in all situations

Question 17

Tom is trying to change his Use Case into a Data Flow Diagram.He has found that a use case step generally is the same as a ________ on the Level 1 Data flow diagram.

Accepted Answer

A)  Process 
B)  External Entity 
C)  Data flow 
D)  Internal Entity 
E)  Data store

Question 18

One end of every data flow will always come from - or go to - a process - with an arrow showing the direction into or out of the process.

Accepted Answer

A) True 
 B)False

Question 19

On a data flow diagram,there is an arrow called 'student record details'.This would be:

Accepted Answer

A)  A process 
B)  A data flow 
C)  A data store 
D)  An external entity 
E)  It is impossible to tell from the information given

Question 20

Data that is moving from a process to another process is called a 'data stream'.

Accepted Answer

A) True 
 B)False

Exam 5: Process Modeling

Data (like Year-to-date totals)that come from a data store and are used in a process (like 'Calculate YTD Totals')and then the updated amounts are written back to the data store - can be drawn on a DFD model as a two-headed arrow.

Vanessa has a data flow diagram with an item called 'Register for Class'.That item would be:

A data repository is a collection of data that is stored in some way on a DFD.

An external entity is:

What diagram will have processes with one decimal place (like 3.1,3.2,and 3.3) and might have flows coming in (or going out) that are not illustrated?

Many business processes are too complex to be explained in one DFD.

It is possible to decompose level 1 processes even farther,so for example,process 2.1 on a Level 1 DFD might become 2.1A,2.1B,2.1C,etc.

Context diagrams show the entire system in context with the environment (like external entities).

One important principal in process modeling with DFD's is the decomposition on the business processes into a series of DFD's.

A data flow is:

A payroll data flow diagram has a data-store called Accumulated Salary Data.At one stage in the DFD,a process "Calculate YTD-Taxes" gets data from that data store,updates it in the process,and writes it back out.The diagram should show:

A well-constructed use case makes developing a data flow diagram fairly straightforward.

The major inputs and major outputs listed on the use case provide a list of the sources and destinations of the inflows and outflows on the processes on a DFD.

Andrei has a diagram that shows only one process and external entities.He is developing a:

Which Data Flow Diagram shows the entire system with its environment with only one process?

On the context diagram,Tim has a process called "Start the Process".It has one output data flow 'Initial Data' and no input data flows.This is:

Tom is trying to change his Use Case into a Data Flow Diagram.He has found that a use case step generally is the same as a ________ on the Level 1 Data flow diagram.

One end of every data flow will always come from - or go to - a process - with an arrow showing the direction into or out of the process.

On a data flow diagram,there is an arrow called 'student record details'.This would be:

Data that is moving from a process to another process is called a 'data stream'.