Deck 10: Program Design

Question 1

By definition,external entities on the DFD:

A)Are used as the starting point for the physical data flow diagram
B)Are outside the scope of the system
C)Will be the top of the structure chart
D)Will become database table entries
E)Are updated with metadata to become part of the physical DFD

Answer 1

B

Question 2

The three types of basic processes on a process model:

A)Sequence,selection and iteration processes
B)Navigation,status and work processes
C)Afferent,central and efferent processes
D)Batch,online and real time processes
E)Singular,bilateral and library processes

Answer 2

C

Question 3

The fourth step in creating a Physical Data Flow Diagram is

A)Update the metadata in the CASE repository
B)Draw a human-machine boundary
C)Add implementation references
D)Add system-related data stores,data flows and processes
E)Update the data elements in the data flows

Answer 3

E

Question 4

Every part of a system that is not automated will:

A)Be ignored in the implementation of the system
B)Be drawn as only logical DFDs not physical DFDs
C)Be outside the human-machine boundary
D)Go back through the analysis phase to become automated
E)Will be drawn as diamond shapes on the structure charts

Question 5

The second step in creating a Physical Data Flow Diagram is

A)Update the metadata in the CASE repository
B)Draw a human-machine boundary
C)Add implementation references
D)Add system-related data stores,data flows and processes
E)Update the data elements in the data flows

Question 6

In most automated cases,data stores from logical DFDs will be converted to:

A)Binary tables
B)CD Rom disks
C)Paper files
D)Into database files / tables
E)Encrypted hexadecimal values

Question 7

Which is NOT true of Structure Charts when designing programs?

A)They show all the components of code that must be included in a program at a high level
B)They are arranged in a hierarchical format that implies sequence
C)They help analysts create programs that are easy to understand and maintain
D)They are generally implemented with control flags that pass from the control modules to the subordinate modules
E)They may have on-page and off-page connectors

Question 8

Generally,transaction structures on a structure chard will have:

A)Many afferent processes
B)Many efferent processes
C)Many data couples
D)Many control couples
E)Many conditional couples

Question 9

Processes from logical DFDs might show up on a physical data flow diagram as:

A)Tables in a database
B)External entities
C)Outside the human-machine boundary
D)Audit log files
E)HTML screens or Visual Basic forms

Question 10

When you are updating the data elements in the data flows (when creating a physical DFD)you might need to:

A)Return to users to interview them about the physical data flows
B)Update the original cost/benefit analysis to reflect the physical storage
C)Do a technology analysis
D)Add physical data elements to the metadata descriptions in the CASE repository
E)Do formal benchmarking of the data flows

Question 11

Which is NOT true of structure charts?

A)They show sequence
B)They show the user interface
C)They show couples
D)They show selection
E)They emphasize structure and reusability

Question 12

The fifth step in creating a Physical Data Flow Diagram is

A)Update the metadata in the CASE repository
B)Draw a human-machine boundary
C)Add implementation references
D)Add system-related data stores,data flows and processes
E)Update the data elements in the data flows

Question 13

A general suggestion about using couples in drawing structure charts is:

A)The use of many couples clarify the processing
B)It is best to be conservative when applying couples to your diagram
C)To use 'combination' couples when both data couples and control couples are needed
D)You should have at least twice as many afferent couples as efferent couples
E)Use only data couples and no control couples

Question 14

The third step in creating a Physical Data Flow Diagram is

A)Update the metadata in the CASE repository
B)Draw a human-machine boundary
C)Add implementation references
D)Add system-related data stores,data flows and processes
E)Update the data elements in the data flows

Question 15

In determining if a process is to be automated,the project team will do all of the following EXCEPT:

A)Weigh the costs
B)Redraw the logical DFD as a combined logical/physical DFD
C)Determine benefits
D)Evaluate the efficiency
E)Consider the integrity of the process to the system

Question 16

Pseudocode is:

A)The same as structured English
B)A technique similar to structured English
C)A subset of the Java programming language
D)A coding environment sponsored by Oracle
E)The term for designing language prototyping screens with Visual Basic or HTML

Question 17

The Human-Machine Boundary

A)Is the keyboard and screen
B)Builds on research in ergonometry
C)Is a line drawn on the physical DFD to separate human action from automated processes
D)Is a part of developing the HCI interface
E)Separates where manual processes are separated by human completed processes

Question 18

Beth is considering a simple process for immediate orders.When processing an immediate order,a phone clerk writes the order on a paper form.Which of the following might be a reason NOT to automate this process?

A)The clerk could make errors when writing the information wrong on the paper form
B)The paper form could be lost when sent to the order filling /shipping area
C)The writing on the paper form could be hard to decipher
D)The costs to automate might be significantly higher than doing it manually
E)The time to get the paper form from the clerk's desk to the order filling / shipping area is one day or longer

Question 19

When changing a logical DFD into a physical DFD,it might be necessary to ________.

A)Add system-related data stores,data flows and processes
B)Normalize the logical DFD into 3NF
C)Create the user-interface with smaller fonts
D)Change the system architecture to three-tiered architecture
E)Delete extraneous data stores and delete extraneous data flows

Question 20

Which of the following is NOT true?

A)Analysts design programs in the design phase of the SDLC,programmers code programs in the Implementation phase
B)Analysts can use structure charts to design programming logic
C)Analysts can build in the three structures of sequence,selection and iteration into structure charts
D)Programmers can take the logical DFDs and directly implement into code by compiling the metadata in the CASE tools
E)Physical DFDs show additional details,such as what tables in the database replace data stores on the logical DFD

Question 21

There are two symbols that describe special types of control in a structure chart.They are a curved arrow and a diamond.These symbols represent _____ and _____.

A)connector,conditional line
B)control,subordinate
C)library module,conditional line
D)loop,conditional line
E)loop,connector

Question 22

Generally,transform structures on a structure chart will have:

A)Many afferent processes
B)Many efferent processes
C)Many data couples
D)Many control couples
E)Many conditional couples

Question 23

There are some 'system-related' data stores,data flows and processes that must be added when creating the physical DFD

Question 24

In a structure chart,the purpose of a control couple is to:

A)Pass parameters from a subordinate module to the control module
B)Pass parameters from the control modules to a subordinate module
C)Pass data from a subordinate module to the control module
D)Pass data from the control module to a subordinate module
E)Chaperone the dance for programmers on the project

Question 25

An audit control / audit logfile might be a system related process,data flow and data store that would be added when creating physical DFDs.

Question 26

Pseudocode is:

A)A language popularized by Feinstein and Longenecker in the 1990's
B)A detailed outline of the lines of code that need to be written
C)A 'pretend' syntax inherent in all CASE tools
D)The translation of code into ASCII
E)A dialect of Visual Basic only used in program design

Question 27

Reusable modules,which are represented in the structure chart as rectangles with vertical lines on both sides,may often appear several times in a structure chart.These are called _____ modules.

A)conditional
B)control
C)library
D)loop
E)off-page connector

Question 28

The Human-Machine boundary is part of the Human-Computer Interface into usability systems.

Question 29

Many of the data stores in the logical DFD will be changed into encrypted word processing documents when a physical DFD is developed.

Question 30

Micah is adding implementation resources to change a logical DFD into a physical DFD.He should describe databases,files,tables,and processes as they will be implemented on the computer.

Question 31

When drawing the human-machine boundary,all processes in the physical DFD will be automated,so only external entities will be excluded.

Question 32

In a structure chart,the element that is drawn as an empty circle with an attached arrow is known as a(n)_____.

A)conditional line
B)connector
C)control couple
D)data couple
E)module

Question 33

Because (a)preexisting code needs to be understood,organized,and pieced together;and (b)it is still common for the project team to have to write some code and adapt packages to the business environment,it is therefore good for analysts to fully understand program design.

Question 34

As a structure chart is constructed,it is generally best to build modules with:

A)High cohesion
B)Highly coupled
C)High fan-out
D)Have the word "and" in the module title
E)A high level of coincidental cohesion

Question 35

Because project teams rely more on packaged software,program design is no longer needed.

Question 36

When building the physical data flow diagram,processes may become html web pages or Visual Basic screens.

Question 37

_____ refers to how well the lines of code within each module in a structure chart relate to each other.

A)calculation
B)cohesion
C)control
D)coupling
E)fan-in

Question 38

When creating the physical DFD,you may want to capture system information like date and time of update and user-id of the person who did the update.

Question 39

In a structure chart,a transaction structure _____.

A)contains a control module that calls several subordinate modules in sequence,after which something "happens"
B)contains a control module that calls subordinate modules,each handling a particular transaction
C)contains a transactional loop
D)is a subordinate module that handles a particular transaction
E)is subordinate to subordinal modules

Question 40

In a structure chart,the element that communicates that a message or a system flag is being passed from one module to another is known as a(n)_____.

A)conditional line
B)connector
C)control couple
D)data couple
E)loop

Question 41

A signal of poor cohesion could be the presence of control flags that are passed down to subordinate modules

Question 42

A transaction structure in a structure chart contains a control module that calls subordinate modules and frequently occur with menus.

Question 43

Couples in structure charts always show two modules that are executed together and are drawn with horizontal lines at the top and bottom.

Question 44

A control module can also be called a library module and is a set of reusable code.

Question 45

The three basic kinds of processes on a process module are afferent,central and efferent.

Question 46

Generally,transaction structures occur at lower levels of a structure chart.

Question 47

Data couples are shown by arrows with empty circles and show how data flows between modules.

Question 48

Functional,coincidental,and temporal are all types of cohesion.

Question 49

Jim is working from a leveled DFD and creating structure charts.He is finding that the lower levels of the DFD generally correspond to transform structures.

Question 50

An afferent process is an input process on a structure chart.

Question 51

A structure chart shows sequence,selection and data flows.

Question 52

A good indication of needing a transaction structure on a structure chart occurs when a DFD shows a single data flow entering a process that produces multiple data flows as outputs.

Question 53

A structure chart is often completed in one attempt.

Question 54

Factoring is the process of separating out a function from a module in order to create a module of its own.

Question 55

Fan-In describes the number of subordinates that communicate with the control module.

Question 56

A structure chart is composed of modules that work together to form a program.

Question 57

A temptation when moving from analysis to design of a system is to jump right into coding.

Question 58

Control couples show the passing of parameters or system related messages between modules (like 'end-of-file').

Question 59

An effective process is an output process on a structure chart.

Question 60

A diamond on a structure chart shows sequence - like a baseball player would go to first base,then second,third and home.

Question 61

It seems a lot of work to create structure charts,with high cohesion,loosely coupled,with high fan-in,low-fan-out,with transaction structures and transform structures.Why should an analyst bother developing structure charts and instead just pass on the specifications to the programmer?

Question 62

Compare and contrast cohesion and coupling.

Question 63

What is a 'top-down approach' and why is it important when designing programs?

Question 64

Structure charts show: sequence,selection and iteration.What are these factors?

Question 65

What is the difference between transaction structures and transform structures on a structure chart?

Question 66

Summarize the quality checks that should be performed when reviewing structure charts.

Question 67

When putting individual components together for a structure chart you will need to identify the three basic kinds of processes in a process model.Identify these three kinds of models and describe each.

Question 68

What is Fan-in and Fan-out?