Deck 7: Structuring System Process Requirements

Question 1

Context DFD is one of the deliverables for process modeling.

Answer 1

True

Question 2

A ________ is a DFD that represents a system's major processes,data flows,and data stores at a high level of detail.

A)Level-1 diagram
B)Level-0 diagram
C)Level-2 diagram
D)Level-3 diagram

Answer 2

B

Question 3

________ are NOT a component of data flow diagram symbols.

A)Processes
B)Data stores
C)Data flows
D)Data programs

Answer 3

D

Question 4

What is process modeling? What are the deliverables for process modeling?

Question 5

A ________ is used in both conventions for sources/sinks and has a name that states what the external agent is,such as Customer,Teller,EPA Office,or Inventory Control System.

A)Circle
B)Triangle
C)Rectangle
D)Square

Question 6

________ is/are NOT a deliverable for process modeling.

A)Context DFD
B)DFDs of the system
C)Thorough descriptions of each DFD component
D)Inadequately decomposed diagrams

Question 7

With only ________ symbols,you can use DFDs to represent both physical and logical information systems.

A)Four
B)Three
C)Five
D)Six

Question 8

________ is NOT a phase in a systems development life cycle.

A)Maintenance
B)Planning
C)Attributes
D)Design

Question 9

Because requirements determination and structuring are often parallel steps,DFDs evolve from the more general to the more detailed as current and replacement systems are better understood.

Question 10

According to the DFD conventions,the data flow is always depicted by a(n)________.

A)Rectangle
B)Circle
C)Arrow
D)Triangle

Question 11

DFDs do not provide notation but illustrate important concepts about the movement of data between manual and automated steps.

Question 12

No process can have only ________.It would be making data from nothing (a miracle).If an object has only outputs,then it must be a source.

A)Sources
B)Sinks
C)Inputs
D)Outputs

Question 13

What is a DFD? Why are DFDs used?

Question 14

A ________ is a picture of the movement of data between external entities and the processes and data stores within a system.

A)Process flow diagram
B)Data flow diagram
C)Data diagram
D)Procedure flow diagram

Question 15

When two ________ have the same data flow name,you must be careful that these flows are exactly the same.

A)Rectangles
B)DFDs
C)Arrows
D)Processes

Question 16

A ________ is the work or actions performed on data so that they are transformed,stored,or distributed.

A)Process
B)Data store
C)Flowchart
D)Data flow

Question 17

A data flow diagram (DFD)is a picture of the movement of data between external entities and the processes and data stores within or outside a system.

Question 18

A ________ can be best understood as data in motion,moving from one place in a system to another.

A)Process
B)Data flow
C)Data store
D)Data source

Question 19

A ________ is the origin and/or destination of the data,and these are sometimes referred to as external entities because they are outside the system.

A)Data graph
B)Data flow
C)Process
D)Source

Question 20

Flowcharting has been criticized by proponents of structured analysis and design because it is too ________.

A)Geometrically oriented
B)Diagrammatic
C)Physically oriented
D)Methodological

Question 21

According to the DFD guidelines,the inputs to a process are different from the outputs of that process.

Question 22

Sources/sinks are sometimes referred to as external entities because they are outside the system.

Question 23

The information system is depicted as a DFD and the highest-level view of this system is called a context diagram.

Question 24

Which characteristics of sources and sinks are of no importance?

Question 25

Compare and contrast DFDs and flowcharts.

Question 26

A data flow is data that move together,so it can be composed of many individual pieces of data that are generated at the same time and that flow together to common destinations.

Question 27

Data cannot move directly from a source to a sink.It must be moved by a process if the data are of any concern to our system.Otherwise,the data flow is not shown on the ________.

A)Sink
B)Procedure
C)Flow chart
D)DFD

Question 28

No process can have only ________ and if an object has only that,then it must be a sink.

A)Inputs
B)Procedure
C)Outputs
D)Arrow

Question 29

A data flow has ________ direction(s)of flow between symbols.It may flow in both directions between a process and a data store to show a read before an update.

A)No
B)Three
C)One
D)Multi

Question 30

A data store is data at rest and may represent only one physical location for data.

Question 31

A level-1 diagram is a DFD that represents a system's major processes,data flows,and data stores at a high level of detail.

Question 32

DFDs are not as good as flowcharts for depicting the details of physical systems; on the other hand,flowcharts are not very useful for depicting purely logical information flows.

Question 33

Data flow diagrams are non-versatile diagramming tools and consist of only three symbols.

Question 34

Data cannot move directly from one data store to another data store.Data must be moved by a ________.

A)Flow chart
B)Procedure
C)Process
D)Data source

Question 35

A level-0 diagram represents the primary individual processes in the system at the highest possible level.

Question 36

A data flow has multiple directions of flow between symbols.It may flow in both directions between a process and a data store to show a read before an update.

Question 37

A source/sink might not consist of a person inside or outside the business unit supported by the system you are analyzing who interacts with the system.

Question 38

A(n)________ in a data flow means that exactly the same data goes from a common location to two or more different processes,data stores,or sources/sinks.(This usually indicates different copies of the same data going to different locations.)

A)Arrow
B)Join
C)Break
D)Fork

Question 39

What do each of the four symbols in a DFD represent? Explain the terms used in describing the processes in the DFD.

Question 40

There are two different standard sets of DFD symbols and each set consists of three symbols that represent the same things.

Question 41

The lowest level of a DFD is called a ________ data flow diagram.

A)Low-level
B)Primitive
C)Level-0
D)Basic

Question 42

A data flow has a noun phrase label.More than one data flow noun phrase can appear on a single ________ as long as all of the flows on the same arrow move together as one package.

A)Circle
B)Rectangle
C)Join
D)Arrow

Question 43

A(n)________ in a data flow means that exactly the same data come from any of two or more different processes,data stores,or sources/sinks to a common location.

A)Join
B)Fork
C)Break
D)Arrow

Question 44

A data flow to a data store means ________.

A)Join
B)Update
C)Process
D)Fork

Question 45

At the ________ level of DFDs,new data flows may be added to represent data that are transmitted under exceptional conditions.These data flows typically represent error messages or confirmation notices.

A)Highest
B)Lowest
C)Basic
D)Medium

Question 46

A data flow cannot go directly back to the same process it leaves.There must be at least ________ other process(es)that handle(s)the data flow,produce(s)some other data flow,and return(s)the original data flow to the beginning process.

A)Three
B)Two
C)One
D)Four

Question 47

Balancing is the conservation of inputs and outputs to a DFD process when that process is decomposed to a ________ level.

A)Balanced
B)Similar
C)Lower
D)Higher

Question 48

When you decompose a DFD from one level to the next,there is a conservation principle at work and we must conserve inputs and outputs to a process at the next level of decomposition.

Question 49

A data flow consisting of several sub-flows on a level-n diagram can be split apart on a level-0 diagram for a process that accepts this composite data flow as input.

Question 50

The concept of DFD ________ refers to whether you have included in your DFDs all of the components necessary for the system you are modeling.

A)Completeness
B)Accuracy
C)Balancing
D)Processing

Question 51

Functional decomposition is a(n)________ process of breaking the description of a system down into finer and finer detail,which creates a set of charts in which one process on a given chart is explained in greater detail on another chart.

A)Iterative
B)Never-ending
C)Continuous
D)Static

Question 52

A ________ diagram is a DFD that is generated from n nested decompositions from a level-0 diagram.

A)Level-n
B)Level-0
C)Level-1
D)Level-2

Question 53

A data flow to a data store means retrieve and a data flow from a data store means change.

Question 54

Explain the process of functional decomposition.

Question 55

A data flow has a noun phrase label.More than one data flow noun phrase can appear on a single arrow as long as all of the flows on the same arrow move together as one package.

Question 56

The inputs to a process must be sufficient to produce the outputs (including data placed in data stores)from the process.Thus,all outputs can be produced,and all data in inputs move somewhere: to another process or to a data store outside the process or onto a more detailed DFD showing a decomposition of that process.

Question 57

List the advanced rules governing DFDs.

Question 58

Data flow repository entries typically will NOT include ________.

A)The label or name for the data flow as entered on the DFDs
B)A list of other repository objects grouped into categories by type of object
C)The composition or list of data elements contained in the data flow
D)A long description defining the data flow

Question 59

The act of going from a single system to ________ component processes is called (functional)decomposition.

A)Two
B)Three
C)Four
D)Six

Question 60

List the parts of a DFD diagram and at least one rule for each one.

Question 61

Provide an example of DFDs being used in BPR.

Question 62

Use cases written at the fish and ________ levels (sometimes called the clam level)are much more detailed and focus on sub-function goals.

A)Black
B)White
C)Kite
D)Sea

Question 63

A(n)________ arises when one use case uses another use case and is shown diagrammatically as a dotted-line arrow pointed toward the use case that is being used.

A)Extend relationship
B)Include relationship
C)System boundary
D)Connection

Question 64

A(n)________ is an external entity that interacts with a system and is someone or something that exchanges information with the systems.

A)Procedure
B)DFD
C)User
D)Actor

Question 65

Describe the process in knowing when to stop decomposing a DFD.

Question 66

________ DFD development recognizes that requirements determination and requirements structuring are interacting,not sequential,subphases of the analysis phase of the SDLC.

A)Primitive
B)Iterative
C)Subjective
D)Consistent

Question 67

As seen from the clouds,as if flying in a plane at 35,000 feet,refers to which level according to Cockburn?

A)White
B)Kite
C)Blue
D)Fish

Question 68

A use-case consists of a set of possible sequences of interactions between a system and ________ in a particular environment,possible sequences that are related to a particular goal.

A)User
B)Procedure
C)Function
D)Company

Question 69

________ are NOT a part of a decision table.

A)Condition stubs
B)Action stubs
C)Rules
D)Policies

Question 70

Both the white and ________ levels provide a summary of the use case goals.

A)Blue
B)Black
C)Kite
D)Fish

Question 71

What are the guidelines for drawing DFDs?

Question 72

What is typically included in a data flow repository?

Question 73

Explain the three parts of a decision table.

Question 74

The concept of DFD ________ refers to whether or not the depiction of the system shown at one level of a nested set of DFDs is compatible with the depictions of the system shown at other levels.

A)Consistency
B)Completeness
C)Balancing
D)Accuracy

Question 75

A ________ is a diagram of process logic where the logic is reasonably complicated.

A)Decision table
B)Decision box
C)Decision column
D)Decision flow

Question 76

If your DFD contains data flows that do not lead anywhere or data stores,processes or external entities that are not connected to anything else,your DFD is not accurate.

Question 77

________ is the process of discovering discrepancies between two or more sets of DFDs or discrepancies within a single DFD.

A)Timing
B)Primitive DFD
C)Basic analysis
D)Gap analysis

Question 78

Use cases written at the ________ level focus on user goals.

A)White
B)Blue
C)Black
D)Kite

Question 79

How can you use DFDs as an analysis tool?

Question 80

________ is NOT one of the levels of details suggested by Cockburn.

A)White
B)Kite
C)Red
D)Blue