System questions

Question # 00004309 Posted By: mac123 Updated on: 12/01/2013 12:37 PM Due on: 12/28/2013
Subject Computer Science Topic General Computer Science Tutorials:
Question
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1

Question:Changing over from the old information system to a new one by turning off the old system as the new one is turned on best describes

A

Phased installation

B

Single location installation

C

Parallel installation

D

Direct installation

E

Rotation installation

2

Question:On a data-flow diagram, a diamond represents a process.

A

True

B

False

3

Question:When designing the navigation procedures within your system, the primary concerns are

A

The design of between-field navigation and the ability to provide feedback

B

Grouping data fields into logical categories and assigning group labels

C

Flexibility and consistency

D

Formatting and meaningful labels

E

Spacing and color differences

4

Question:Functional decomposition is a repetitive process of breaking the description or perspective of a system down into finer and finer detail.

A

True

B

False

5

Question:A ternary relationship is the equivalent of three binary relationships.

A

True

B

False

6

Question:In a file-oriented information system, a security file ____.

A

Stores relatively permanent data about an entity

B

Is created and saved for backup and recovery purposes

C

Stores records that contain day-to-day business and operational data

D

Is a temporary file created by an information system for a single task

7

Question:Which of the following types of maintenance accounts for as much as 70 percent of all maintenance activity?

A

Preventive maintenance

B

Corrective maintenance

C

Adaptive maintenance

D

Perfective maintenance

E

Internal maintenance

8

Question:In a typical file processing environment, ____ problems can occur if updates are not applied in every file.

A

Rigid data structure

B

Data integrity

C

Referential integrity

D

Data redundancy

9

Question:The ease with which software can be understood, corrected, adapted, and enhanced best describes

A

Maintenance

B

Maintainability

C

Adaptability

D

Comfort level

E

Installation

10

Question:Which of the following influences most of the costs associated with maintaining a system?

A

Maintenance personnel

B

Documentation quality

C

Number of latent defects

D

Number of customers

E

Tools

11

Question:____ describe what objects need to know about each other, how objects respond to changes in other objects, and the effects of membership in classes, superclasses, and subclasses.

A

Aggregates

B

Relationships

C

Clusters

D

Linkages

12 Not certain of answer

Question:The dependence of nonprimary key attributes on other nonprimary key attributes best describes a

A

Relationship dependency

B

Transitive dependency

C

Weak attribute

D

Weak entity

E

Weak relationship

13

Question:A primary key should be null.

A

True

B

False

14

Question:A relationship between object classes best defines

A

Encapsulation

B

Scope

C

Association

D

Composition

E

Integration

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Question:Data-flow diagramming is one of several structured analysis techniques used to increase software development productivity.

A

True

B

False

16

Question:Referential integrity specifies that the value of an attribute of one relation depends on the existence of the same attribute in another relation.

A

True

B

False

17

Question:Which of the following functional capabilities are required for providing smooth and easy navigation within a form?

A

Cursor-control capabilities

B

Editing capabilities

C

Exit capabilities

D

Help capabilities

E

All of the above

18

Question:During an inspection test, exactly what the code does is investigated.

A

True

B

False

19

Question:A relationship between the instances of one entity type is a

A

Unary relationship

B

Binary relationship

C

Ternary relationship

D

Singular occurrence

E

Partnership occurrence

20

Question:When two relations, A and B, have a many-to-many relationship, we create a separate relation, C, to represent this.

A

True

B

False

21

Question:A relation is said to be in second normal form if the primary key consists of only one attribute.

A

True

B

False

22

Question:Where possible, text should appear in all uppercase on forms.

A

True

B

False

23

Question:Which of the following encompasses an object's properties and the values those properties have?

A

Behavior

B

Class

C

State

D

Encapsulation

E

Incorporation

24

Question:Which of the following represents how an object acts and reacts?

A

Behavior

B

Class

C

State

D

Encapsulation

E

Environment

25

Question:Which of the following provides an external interface to a class?

A

Constructor

B

Operation

C

View

D

Association

E

Source

26

Question:During beta testing, users test a completed information system using real data in the real user environment.

A

True

B

False

27

Question:Which of the following is a true statement?

A

The goal of conceptual data modeling is to capture as much of the meaning of data as is possible

B

The efficiencies gained by maintaining systems at the rule rather than code level drastically reduce cost

C

If a thorough repository of data descriptions is kept, the system can be regenerated as the business rules change

D

The more details about data that we can model, the better the system we can design and build

E

All of the above are true statements

28

Question:Changes made to a system to fix or enhance its functionality best defines

A

Maintenance

B

Support

C

Repair

D

Installation

E

Coding

29


Question:When each nonprimary key attribute is identified by the whole key, the relation is said to be in at least

A

Second normal form

B

Third normal form

C

Fourth normal form

D

Fifth normal form

E

A relational form

30

Question:The most complete acceptance testing will include

A

Alpha testing, beta testing, and a walkthrough

B

Beta testing, stub testing, and unit testing

C

Desk checking, a system audit, and integration testing

D

A system audit, system testing, and integration testing

E

Alpha testing, beta testing, and a system audit

31

Question:During physical design, you consider

A

The definitions of each attribute

B

The descriptions of where and when data are entered, retrieved, deleted, and updated

C

The expectations for response time and data integrity

D

The descriptions of the file and database technologies to be used

E

All of the above

32

Question:A context diagram shows the scope of the organizational system, system boundaries, external entities that interact with the system, and the major information flows between entities and the system.

A

True

B

False

33

Question:An object is an entity that has a well-defined role in the application domain, and has state, behavior, and identity.

A

True

B

False

34

Question:An association between the instances of one or more entity types that is of interest to the organization best defines

A

Occurrence

B

Relationship

C

Natural connection

D

Cardinality

E

Entity link

35

Question:Highlighting methods should be consistently selected and used based upon the level of importance of the emphasized information.

A

True

B

False

36

Question:Use cases show the static structure of data and the operations that act on data.

A

True

B

False

37

Question:____ is the transfer of information systems development, operation, or maintenance to an outside firm that provides these services, for a fee, on a temporary or long-term basis.

A

Outsourcing

B

Commission

C

Subscription

D

External provision

38

Question:A(n) ____ is a user interface that allows users to interact with graphical objects and pointing devices.

A

HCI

B

PCI

C

UI

D

GUI

39

Question:An identifier is a candidate key that has been selected as the unique, identifying characteristic for an entity type.

A

True

B

False

40

Question:Transitive attributes are attributes that determine other attributes.

A

True

B

False

41

Question:Combining all normalized user views into one consolidated logical database model refers to

A

Normalization

B

Requirements structuring

C

File integration

D

View integration

E

Logic modeling

42

Question:A functional dependency between two (or more) nonkey attributes in a relation defines a

A

Weak dependency

B

Partial dependency

C

Simple dependency

D

Transitive dependency

E

Recursive dependency

43

Question:The purpose of acceptance testing is to

A

Determine if new requirements must be added to the newly completed system

B

Determine if the system meets user requirements

C

Determine if the system meets its objectives

D

Test a completed information system using simulated data

E

Test a completed information system using real data

44

Question:A candidate key that has been selected as the unique, identifying characteristic for an entity type is called a(n)

A

Attribute

B

Identifier

C

Secondary key

D

Gerund

E

Index

45

Question:On a use-case diagram, a linking relationship arises when one use case references another use case.

A

True

B

False

46

Question:An arrow on a data-flow diagram represents a(n)

A

Data store

B

Data flow

C

Process

D

Source

E

Action sequence

47

Question:Which of the following is not a rule for structuring data entry fields?

A

Never require data that is already online or that can be computed

B

Always provide default values when appropriate

C

Data entries should not be justified

D

Always place a caption adjacent to fields

E

Provide context-sensitive help when appropriate

48

Question:One problem in a file processing environment is ____, which means that data common to two or more information systems is stored in several places.

A

Rigid data structure

B

Data integrity

C

Referential integrity

D

Data redundancy

49

Question:An object has certain ____, like the make, model, and color of a car.

A

Keys

B

Attributes

C

Indices

D

Packets

50

Question:A use case is a complete sequence of related actions initiated by an actor; it represents a specific way to use the system.

A

True

B

False

51

Question:During stress testing, the analysts try to determine how the system performs on the range of possible environments on which it may be used.

A

True

B

False

52

Question:In all cases, a network must use a ____, which is a set of standards that govern network data transmission.

A

Protocol

B

Hub

C

Switch

D

Router

53

Question:Which of the following is true regarding the context diagram?

A

The process symbol is labeled "0"

B

The context diagram contains two processes

C

Data stores must be shown on the context diagram

D

The internal workings of the system are shown on the context diagram

E

The context diagram organizes the processes in a tree-like structure

54

Question:The primary deliverable for the conceptual data-modeling step within the analysis phase is an entity-relationship diagram.

A

True

B

False

55

Question:When displaying textual information, use abbreviations and acronyms as often as possible.

A

True

B

False

56


Question:In the accompanying figure, a ____ is a field or combination of fields that uniquely and minimally identifies a particular member of an entity. http://attachments.bisk.com/TestEngine/Live/Attachments/Questions/CIS3512-1-1.jpg

A

Primary key

B

Common key

C

Secondary key

D

Combination key

57

Question:In a ____, a single communication path connects the network server, departmental servers, workstations, and peripheral devices.

A

Hierarchical network

B

Star network

C

Bus network

D

Ring network

58

Question:____ is a widely used method of visualizing and documenting an information system.

A

UML

B

Java

C

UNIX

D

DFD

59

stion:A data ____, which is a framework for organizing and storing data, consists of one or more files or tables.

A

Structure

B

Roster

C

Index

D

Integral

60

Question:A use case participates in relationships with actors, not other use cases.

A

True

B

False

61

Question:Which of the following is a true statement?

A

Data entities correspond to sources/sinks on a data flow diagram

B

Relationships correspond to data flows on a data flow diagram

C

A data entity will have many possible instances

D

Verbs are used to name entity types

E

An entity type is described many times in the data model

62


Question:A single occurrence of an entity type defines

A

Entity instance

B

Entity appearance

C

Attribute

D

Data element

E

Multivalued attribute

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  1. Tutorial # 00004105 Posted By: mac123 Posted on: 12/01/2013 12:38 PM
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