Tezt 2 practice

Question 1

A _____ is a Unified Modeling Language (UML) technique that visually represents the interaction between users and an information system.

Answer 1

use case diagram

Question 2

What happens during the RAD user design phase?

Answer 2

users interact with systems analysts and develop models and prototypes that represent all system processes, outputs, and inputs.

Question 3

The disadvantage of the four-model approach is that ____.

Answer 3

There is added time and cost needed to develop a logical and physical model of the current system.

Question 4

In modular design, ____ also is called looping.

Answer 4

iteration

Question 5

What is the process of drawing a series of increasingly detailed data flow diagrams (DFDs), until all functional primitives are identified.

Answer 5

leveling

Question 6

What is the four-model approach?

Answer 6

develop a physical model of the current system, a logical model of the current system, a logical model of the new system, and a physical model of the new system.

Question 7

A _____ is a central storehouse of information about a system’s data.

Answer 7

Data dictionary/repository

Question 8

A _____ shows a logical structure, with all possible combinations of conditions and resulting actions.

Answer 8

decision table

Question 9

Decision trees show the logic structure in what form?

Answer 9

horizontal form that resembles a tree with the roots at the left and the branches to the right

Question 10

In a data dictionary, a(n) _____ is the smallest piece of data that has meaning within an information system.

Answer 10

field / data item/ data element

Question 11

A(n) _____ is a specific member of a class.

Answer 11

instance

Question 12

Cardinality describes what?

Answer 12

How instances of one class relate to instances of another class.

Question 13

A _____ graphically documents a use case by showing the classes, the messages, and the timing of the messages.

Answer 13

sequence diagram

Question 14

The Unified Modeling Language (UML) symbol for a use case is a(n) _____ with a label that describes the action or event.

Answer 14

oval

Question 15

In a sequence diagram, a lifeline is identified by a _____ line.

Answer 15

dashed

Question 16

Which concept refers to the mix of software tools, methods, and physical resources that an IT team uses to create an information system?

Answer 16

development environment

Question 17

Traditional code was written in _____.

Answer 17

procedural programming languages (COBOL)

Question 18

When studying an information system, examples of actual documents should be collected using a process called

Answer 18

sampling

Question 19

In a(n) _____ structure, which usually is based on interpersonal relationships, some people have more influence or knowledge than appears on an organization chart.

Answer 19

informal

Question 20

In addition to direct evaluations, systems developers must identify and document indirect expenses that contribute to the _____.

Answer 20

total cost of ownership (TCO)

Question 21

John has finished compiling a list of the various members of the joint application development (JAD) group and the list is as follows: John is the JAD project leader, Tom is the representative from top management, Jennifer is a manager, Alen and Ian are users, Linda and Alex are systems analysts, and Clark is the recorder.

Who should provide feedback regarding how the project will support day-to-day tasks?

Answer 21

Alen and Ian

Question 22

In a data dictionary, _____ refers to whether the data element contains numeric, alphabetic, or character values.

Answer 22

type

Question 23

In a data dictionary, a(n) _____ is the smallest piece of data that has meaning within an information system.

Answer 23

field

Question 24

In a data dictionary, _____ is the maximum number of characters for an alphabetic or character data element or the maximum number of digits and number of decimal positions for a numeric data element.

Answer 24

length

Question 25

In a data dictionary, some data elements have _____ rules. For example, an employee’s salary must be within the range defined for the employee’s job classification.

Answer 25

validity

Question 26

An object’s _____ are the tasks or functions that the object can perform.

Answer 26

methods

Question 27

The line from the actor to the use case is called a(n) _____.

Answer 27

association

Question 28

All objects within a(n) _____ share common attributes and methods.

Answer 28

class

Question 29

The Unified Modeling Language (UML) symbol for a use case is a(n) _____ with a label that describes the action or event.

Answer 29

oval

Question 30

_____ generally refers to a start-to-finish approach to planning, designing, developing, deploying, managing, and maintaining an information system.

Answer 30

Application life cycle management (ALM)

Question 31

What are two non-procedural programming languages?

Answer 31

Java and Python are non-procedural, or event-driven, programming languages.

Question 32

In data flow diagrams (DFDs), a process resembles a _____, where the inputs, outputs, and general functions of the process are known, but the underlying details are not shown.

Answer 32

Black box, this is because the inputs, outputs, and general functions of the process is known but any details and/or logic is hidden

Question 33

Define encapsulation using the black box concept

Answer 33

A black box doesn’t want or need outside interference. It limits access to it’s internals. Thus preventing its internal code from being altered. Encapsulation lets objects get used as modular components anywhere, but do not alter the internal methods of other objects.

Question 34

What is forward engineering?

Answer 34

translating business processes and functions into applications.

Question 35

Data elements combine together into ____

Answer 35

records/ data structures | meaningful combination of related data elements.