Question 1

Data flow diagramming is:
A)The only process modeling currently used
B)A detailed description of data
C)Almost the same as a flow chart
D)Focused on the processes or activities that are performed
E)A visual version of a use case

Accepted Answer

Data flow diagramming is focused on the processes or activities that are performed. It shows the flow of information and data between these processes or activities. It is different from a flowchart, which may also include other elements such as decisions and loops.

Question 2

Andrei has a diagram that shows only one process and external entities.He is developing a:
A)Context diagram
B)Use case diagram
C)Level 0 diagram
D)Level 1 diagram
E)Level 2 diagram

Accepted Answer

A context diagram typically shows only one process and its interactions with external entities, which matches the information provided in the question. Use case diagrams, level 0 diagrams, and level 1 and 2 diagrams typically show more detail about the internal processes and interactions within a system.

Question 3

A process model is:
A)The output of the interviewing process
B)The work plan
C)The model that is produced by extreme prototyping
D)The expanded and thoroughly balanced use case for a system
E)A formal way of representing how a business system operates

Accepted Answer

A process model is a formal way of representing how a business system operates. It provides a visual representation of the activities carried out by the system and the relationships between them. It is used to analyze, design, and improve business processes. The other options are not accurate definitions of a process model.

Question 4

Andrea is creating a diagram model for processes (without regard to whether it is computerized or a manual process).She is probably creating _______________.
A)A physical process model
B)A PMT (process management tool)model
C)A logical process model
D)A user process model
E)A UML system case model

Accepted Answer

Andrea is likely creating a logical process model, which focuses on the flow of tasks and activities without being tied to specific technology or resources. Physical process models, on the other hand, are tied to specific physical resources and locations. PMT models are specific tools used for managing processes. User process models and UML system case models may be related to processes, but they are not generic process models that can be used for any type of process.

Question 5

Brianna has a process has two inputs but only one 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

Accepted Answer

Processes can have varying numbers of inputs and outputs; it's normal for a process to have multiple inputs and one output, as long as there is at least one of each.

Question 6

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

Accepted Answer

A data flow represents a single piece of data moving from one part of a system to another.

Question 7

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)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

Accepted Answer

The setup described is common in a point-of-sale system where the 'Items' data store serves as a reference for retail prices during checkout. The 'Item Details' data flow retrieves the retail price for a specific item. It is not necessary for a data store to have both inputs and outputs, and not all processes require both inputs and outputs. It is also not necessary for the data flow to have a verb phrase. Finally, Mark may have other data flows that update the 'Items' data store, but it is not relevant to the given scenario.

Question 8

Ruth is an analyst.On her DFD diagram she has just placed a process.She will
A)Give it a verb phrase name,like 'search inventory'
B)Give it a noun description phrase,like 'Inventory-process-1'
C)Give it only a number - and depending on whether it is a major process (a whole number)or a subsidiary process (a whole number with a decimal point and value - like 1.3)
D)Give it a sentence name,like 'Customer arrives at checkout counter'
E)Use whatever process she feels comfortable with - as long as she is consistent

Accepted Answer

Giving the process a verb phrase name makes it clear and easy to understand what the process does. It follows the standard convention for naming processes in DFDs.

Question 9

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

Accepted Answer

Use cases are developed first to identify functional requirements and then data flow diagrams are developed to show how data flows between different components in the system. Use cases help in identifying the input and output data required by the system, which are shown in data flow diagrams as data flows. Therefore, use cases and data flow diagrams are closely related and used together in system analysis and design.

Question 10

Which Data Flow Diagram shows the entire system with its environment with only one process?
A)Context Diagram
B)Level 0 diagrams
C)Level 1 diagrams
D)Level 2 diagrams
E)All DFDs show this

Accepted Answer

The Context Diagram is the only DFD that shows the entire system with its environment with only one process. It provides a high-level view of the system and its interactions with external entities.

Question 11

On your level 0 diagram you have a process #2 and when you create a level 1 diagram for process #2,you might have processes like:
A)2.1,2.2,2.3
B)2-1,2-2,2-3
C)2A,2B,2C
D)2-A,2-B,2-C
E)2-initial,2-main,2-end

Accepted Answer

Using numbers with decimals (e.g. 2.1, 2.2, 2.3) is a commonly accepted and understood convention for creating level 1 processes that branch off from a level 0 process.

Question 12

Processes in data flow diagramming are represented by:
A)Rounded boxes
B)Arrows
C)Rectangles that is open on the right end
D)Enclosed rectangles
E)Circles

Accepted Answer

Processes in data flow diagramming are typically represented by rounded boxes, which symbolize the transformation or manipulation of data within a system. The other options listed (arrows, open rectangles, enclosed rectangles, and circles) are used to symbolize different aspects of data flow diagramming, such as data flows, external entities, and data stores.

Question 13

An external entity is:
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

Accepted Answer

An external entity is any person, organization, or system outside of the system being developed or analyzed, that interacts with the system to achieve a specific business function or goal. They can provide or receive data, trigger events, or participate in activities within the system. Therefore, option E is the correct choice.

Question 14

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)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

Accepted Answer

This choice provides the clearest and most accurate representation of the data flow for the YTD Payroll Details. It shows the flow of information into and out of the Accumulated Salary Data store, and clearly labels the data store with both the current and updated versions of the YTD Payroll Details. The other options either do not provide enough detail or could be confusing to someone trying to interpret the diagram.

Question 15

Which Data Flow Diagram does not have data stores?
A)Context diagram
B)Level 0 diagram
C)Level 1 diagrams
D)Level 2 diagrams
E)Process Diagram

Accepted Answer

The context diagram is a high-level diagram that provides an overview of the system under study. It only includes the external entities and shows how they interact with the system. It does not include any data stores as it is meant to be a simple representation.

Question 16

Logical process models are:
A)Models that describe processes without suggesting how they are conducted
B)Coded logic models
C)Models based upon implementing the if-then-else programming structure
D)Developed by the infrastructure analyst
E)Created in the system walkthough

Accepted Answer

Logical process models describe processes in a visual or diagrammatic way without suggesting how they should be conducted or implemented. They provide a high-level overview of a process and can be used to identify inefficiencies or areas for improvement in a system.

Question 17

Vanessa has a data flow diagram with an item called 'Register for Class'.That item would be:
A)A process
B)A data flow
C)A data store
D)An external entity
E)A process relationship

Accepted Answer

"Register for Class" is an action that takes input (such as student information) and produces output (such as confirmation of class registration). Therefore, it is a process in the data flow diagram.

Question 18

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?
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

Accepted Answer

The name "Federal Withholding Taxes" clearly identifies the data being transferred from the Calculate Federal Withholding process to the YTD Payroll Data store. It is concise and accurately describes the contents of the data flow.

Question 19

The relationship between use cases and data flow diagrams is:
A)Use cases tend to be developed with users to make sure the analyst has fully captured the processes and relationships;DFD's are built upon the use cases to more fully formally understand the processes involved
B)Both are tools in a systems analysts toolbox,although they do unrelated things
C)Use cases are developed by users exclusively;while DFD's are developed by analysts exclusively
D)Use cases come out of JAD sessions and clarify what was discussed by users in those sessions;DFD's come out of analysts interviews.
E)They are the same thing - use cases are process models using the DeMarco and Yourdon notation;and DFD's are process models using the Gane and Sarson notation.

Accepted Answer

Use cases and data flow diagrams are both process modeling tools used by system analysts. Use cases are usually developed with the help of users to ensure that the analyst has fully captured the processes and relationships. Data flow diagrams are then built upon the use cases to more fully and formally understand the processes involved. Therefore, the relationship between use cases and data flow diagrams is that the latter is built upon the former.

Question 20

A process model can __________:
A)Only document the as-is system
B)Only document the to-be system
C)Document both the as-is and the to-be system
D)Only be used in BPR situations
E)Only be used with JAD sessions

Accepted Answer

A process model can document both the current (as-is) system and the desired (to-be) system.

Quiz 5: Process Modeling

Data flow diagramming is:

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

A process model is:

Andrea is creating a diagram model for processes (without regard to whether it is computerized or a manual process) .She is probably creating _______________.

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

A data flow is:

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?

Ruth is an analyst.On her DFD diagram she has just placed a process.She will

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

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

On your level 0 diagram you have a process #2 and when you create a level 1 diagram for process #2,you might have processes like:

Processes in data flow diagramming are represented by:

An external entity 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:

Which Data Flow Diagram does not have data stores?

Logical process models are:

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

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 relationship between use cases and data flow diagrams is:

A process model can __________: