Question 1

Which of the following would be a 'black hole' error on a DFD?

Accepted Answer

A) A process has no input 
B) A process has no output 
C) A process has four inputs and only three outputs 
D) Data moves directly from a data store from an external entity 
E) Two processes send data flows to the same data store 
A) A process has no input 
B) A process has no output 
C) A process has four inputs and only three outputs 
D) Data moves directly from a data store from an external entity 
E) Two processes send data flows to the same data store B

Question 2

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

Accepted Answer

A) True 
 B)False  True

Question 3

Brianna has a process has two inputs but only one output.

Accepted Answer

A) This is an error as there needs to be the same amount of inputs as outputs 
B) This is an error as process do not have inputs or outputs 
C) This is normal as all processes have two inputs and one output 
D) This is normal as all processes need at least one input and at least one output 
E) This is an error as processes only produce output 
A) This is an error as there needs to be the same amount of inputs as outputs 
B) This is an error as process do not have inputs or outputs 
C) This is normal as all processes have two inputs and one output 
D) This is normal as all processes need at least one input and at least one output 
E) This is an error as processes only produce output D

Question 4

Process models are only used to document the current system (that is,the "as-is" system),since that is the system the users know and is the system that will be modified.

Accepted Answer

A) True 
 B)False

Question 5

The second law of conservation of data states: "Processes cannot consume or create data".

Accepted Answer

A) True 
 B)False

Question 6

Processes should be named with a verb and ending with a noun (like Calculate Sales Tax).

Accepted Answer

A) True 
 B)False

Question 7

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

Question 8

James is developing a DFD.What would be a good name for him to use on a data flow from the Calculate Federal Withholding process to a data store called YTD Payroll Data?

Accepted Answer

A) Move withholding to YTD storage 
B) Transfer fed taxes to YTD storage 
C) Calculation Result 
D) Federal Withholding Taxes 
E) Add amounts to YTD total 
A) Move withholding to YTD storage 
B) Transfer fed taxes to YTD storage 
C) Calculation Result 
D) Federal Withholding Taxes 
E) Add amounts to YTD total

Question 9

Carlos has a Level 0 DFD diagram where one of the external entities is the "Internal Revenue Service" - and he has a data store called "Tax Rate Table".He has drawn a data flow arrow from the Internal Revenue Service to the data store as the data has been loaded into the Tax Rate Table prior to the processing.What would be true?

Accepted Answer

A) This is correct 
B) This is incorrect,'data at rest stays at rest until moved by a process' so he needs a process (like 'load Tax Rate Table')first in this system 
C) This is incorrect - he doesn't need a data flow as the data was loaded into the Tax Rate Table someplace else (within the payroll system someplace,but not in this process) 
D) This is almost correct.The correct diagram would be a dashed line indicating that the loading of the data was implied prior to the start of this process 
E) This is incorrect.What should happen is an 'external process' should be called at the start of the process - like "Call IRS for data load" 
A) This is correct 
B) This is incorrect,'data at rest stays at rest until moved by a process' so he needs a process (like 'load Tax Rate Table')first in this system 
C) This is incorrect - he doesn't need a data flow as the data was loaded into the Tax Rate Table someplace else (within the payroll system someplace,but not in this process) 
D) This is almost correct.The correct diagram would be a dashed line indicating that the loading of the data was implied prior to the start of this process 
E) This is incorrect.What should happen is an 'external process' should be called at the start of the process - like "Call IRS for data load"

Question 10

The context diagram shows:

Accepted Answer

A) Detailed processing logic 
B) All major processes 
C) All the data stores in the system 
D) The "big picture" of the system with external entities and only one process 
E) The system in context with all other systems in that department (for example,accounts payable,accounts receivable,etc. ) 
A) Detailed processing logic 
B) All major processes 
C) All the data stores in the system 
D) The "big picture" of the system with external entities and only one process 
E) The system in context with all other systems in that department (for example,accounts payable,accounts receivable,etc. )

Question 11

A process model is an informal way of showing the external entities,event triggers,inputs and outputs.

Accepted Answer

A) True 
 B)False

Question 12

Mark has a data store called 'Items' and it includes all the items sold in a convenience store - sorted by UPC code with the retail price of the item.He has only one data flow called 'Item Details' that flows from the data store to the Process Checkout process.What will be true in this case?

Accepted Answer

A) This is incorrect as every data store must have both inputs and outputs 
B) This is incorrect as every process must have both inputs and outputs 
C) This is incorrect as the data flow should have a verb phrase like 'Get Item Details' 
D) This is incorrect as there is no way to update the 'Items' data store 
E) This is correct 
A) This is incorrect as every data store must have both inputs and outputs 
B) This is incorrect as every process must have both inputs and outputs 
C) This is incorrect as the data flow should have a verb phrase like 'Get Item Details' 
D) This is incorrect as there is no way to update the 'Items' data store 
E) This is correct

Question 13

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 
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 14

Processes in DFDs are shown as circles in the Gane and Sarson notation.

Accepted Answer

A) True 
 B)False

Question 15

While there is no one right way to begin,the authors have found it useful to first build the context diagram showing all the external entities to the system.

Accepted Answer

A) True 
 B)False

Question 16

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 17

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

Question 18

The level 0 diagram shows all the major processes (at the first level of numbering - like 1 through 4),the data stores,data flows,but does not show external entities.

Accepted Answer

A) True 
 B)False

Question 19

The relation between use cases and data flow diagrams is generally:

Accepted Answer

A) Use cases are developed by users and data flow diagrams are developed by systems analysts 
B) Data flow diagrams are developed first and then use cases ensue 
C) Use cases are developed first and then data flow diagrams ensue 
D) Use cases show logical processes,while data flow diagrams show physical processes 
E) There is not a relationship between use cases and data flow diagrams 
A) Use cases are developed by users and data flow diagrams are developed by systems analysts 
B) Data flow diagrams are developed first and then use cases ensue 
C) Use cases are developed first and then data flow diagrams ensue 
D) Use cases show logical processes,while data flow diagrams show physical processes 
E) There is not a relationship between use cases and data flow diagrams

Question 20

Data flow diagrams (as the name implies)focus on the physical data in a system.

Accepted Answer

A) True 
 B)False

Which of the following would be a 'black hole' error on a DFD?

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

Brianna has a process has two inputs but only one output.

Process models are only used to document the current system (that is,the "as-is" system),since that is the system the users know and is the system that will be modified.

The second law of conservation of data states: "Processes cannot consume or create data".

Processes should be named with a verb and ending with a noun (like Calculate Sales Tax).

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.

James is developing a DFD.What would be a good name for him to use on a data flow from the Calculate Federal Withholding process to a data store called YTD Payroll Data?

The context diagram shows:

A process model is an informal way of showing the external entities,event triggers,inputs and outputs.

Mark has a data store called 'Items' and it includes all the items sold in a convenience store - sorted by UPC code with the retail price of the item.He has only one data flow called 'Item Details' that flows from the data store to the Process Checkout process.What will be true in this case?

A data flow is:

Processes in DFDs are shown as circles in the Gane and Sarson notation.

While there is no one right way to begin,the authors have found it useful to first build the context diagram showing all the external entities to the system.

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

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

The level 0 diagram shows all the major processes (at the first level of numbering - like 1 through 4),the data stores,data flows,but does not show external entities.

The relation between use cases and data flow diagrams is generally:

Data flow diagrams (as the name implies)focus on the physical data in a system.

The Systems Analyst and Information Systems Development

Project Selection and Management

Requirements Determination

Use Case Analysis

Data Modeling

Moving Into Design

Rchitecture Design

User Interface Design

Program Design

Data Storage Design

Moving Into Implementation

Transition to the New System

The Movement to Objects

Filters

Exam 5: Process Modeling

Which of the following would be a 'black hole' error on a DFD?

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

Brianna has a process has two inputs but only one output.

Process models are only used to document the current system (that is,the "as-is" system),since that is the system the users know and is the system that will be modified.

The second law of conservation of data states: "Processes cannot consume or create data".

Processes should be named with a verb and ending with a noun (like Calculate Sales Tax).

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.

James is developing a DFD.What would be a good name for him to use on a data flow from the Calculate Federal Withholding process to a data store called YTD Payroll Data?

The context diagram shows:

A process model is an informal way of showing the external entities,event triggers,inputs and outputs.

Mark has a data store called 'Items' and it includes all the items sold in a convenience store - sorted by UPC code with the retail price of the item.He has only one data flow called 'Item Details' that flows from the data store to the Process Checkout process.What will be true in this case?

A data flow is:

Processes in DFDs are shown as circles in the Gane and Sarson notation.

While there is no one right way to begin,the authors have found it useful to first build the context diagram showing all the external entities to the system.

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

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

The level 0 diagram shows all the major processes (at the first level of numbering - like 1 through 4),the data stores,data flows,but does not show external entities.

The relation between use cases and data flow diagrams is generally:

Data flow diagrams (as the name implies)focus on the physical data in a system.

The Systems Analyst and Information Systems Development

Project Selection and Management

Requirements Determination

Use Case Analysis

Data Modeling

Moving Into Design

Rchitecture Design

User Interface Design

Program Design

Data Storage Design

Moving Into Implementation

Transition to the New System

The Movement to Objects

Filters