Deck 15: Components Reuse

Question 1

Most complex products are built ________.

A) as monolithic objects
B) from independent parts
C) from scratch
D) from inside-out

Answer 1

from independent parts

Question 2

The advancement of technology is ________.

A) revolutionary
B) static
C) incremental
D) dynamic

Answer 2

incremental

Question 3

________ products are made possible only when the availability of what they require, be it tangible or intangible, achieves a critical mass.

A) Complex or revolutionary
B) Simple
C) New
D) Old

Answer 3

Complex or revolutionary

Question 4

Reuse helps with ________.

A) improving productivity
B) managing complexity
C) reducing costs
D) all of the above

Question 5

Reuse can apply to development activities such as ________.

A) analysis
B) design
C) implementation
D) all of the above

Question 6

Reuse can apply to any ________ that is required in software development.

A) product
B) experience
C) expertise
D) all of the above

Question 7

________ is (are) the most obvious, the most reliable and the most effective mechanism for reuse.

A) Components
B) Patterns
C) Inheritance
D) Web services

Question 8

Patterns encapsulate experience in solving problems and they:

A) are not ready-to-use and must be adapted to the specific problems at hand
B) like components are ready to use
C) are packaged as foolproof
D) can't be reused

Question 9

________ is a service that provides platform-independent application logic to consumers across the Web.

A) Pattern
B) Inheritance
C) Web services
D) Component reuse

Question 10

The most obvious, the most reliable, and the most effective mechanism for reuse is ________.

A) patterns
B) refactoring
C) Web services
D) component

Question 11

________ provide(s) the guidelines for discovering the solution.

A) Methodology
B) Reuse
C) Patterns
D) Technology

Question 12

Source code reuse is advisable when solving ________.

A) new problems
B) unique problems
C) problems requiring cookbook solutions
D) complex problems

Question 13

________ is one of the basic concepts of object orientation and is theoretically significant but not very helpful if it cannot be put into practice.

A) Web services
B) The Java language
C) Inheritance
D) Architecture

Question 14

Implementation inheritance is a mechanism where a(n) ________ can reuse, extend, or override the attributes and the operations of its parent.

A) superclass
B) subclass
C) inheritance
D) Web service

Question 15

Subclassing is a kind of inheritance in which the subclass inherits not only the features but also the ________ of its superclass.

A) functionality
B) attributes
C) characteristics
D) name

Question 16

A subclass may add ________ that do not exist in the superclass.

A) attributes
B) operations
C) extensions
D) any of the above

Question 17

The concept of ________ is used when a superclass can provide specialized services through its subclasses.

A) encapsulation
B) reuse
C) polymorphism
D) components

Question 18

________ is a mechanism by which multiple classes share one interface but implement that interface independently of each other or of the parent class.

A) Interface inheritance
B) Double interface
C) Reused component
D) Magic interface

Question 19

In ________ a subclass is responsible for implementing each and every attribute and/or operation of the superclass.

A) polymorphism
B) encapsulation
C) interface inheritance
D) specialization

Question 20

The purpose of interface inheritance is to arrive at a subclass that ________.

A) performs different services
B) has the same attributes
C) has different attributes
D) performs the same services, but in a different way

Question 21

A class can implement ________ interfaces shared with other classes.

A) multiple
B) single
C) double
D) none of the above

Question 22

Which of the following is NOTa reason for creating multiple interfaces?

A) security
B) complexity of services
C) multiple functionality
D) simplicity

Question 23

The concept of "white-box reuse" that exposes a subclass to the details of its superclass implementation applies to ________.

A) encapsulation
B) inheritance
C) polymorphism
D) patterns

Question 24

The black-box reuse approach ce, where the internal details of a class are not exposed to subclasses, is also called ________.

A) composition approach
B) decomposition approach
C) aggregation approach
D) polymorphism

Question 25

Which of the following languages supports multiple inheritance?

A) C++
B) Java
C) C
D) C#

Question 26

Building products from replaceable, interchangeable, reusable, and well-tested components has proved to ________.

A) be the most effective method to ensure quality
B) make products more customizable
C) reduce costs through economy of scale.
D) all of the above

Question 27

Building everything from start to finish in one project is called ________ development.

A) vertical
B) horizontal
C) circular
D) inside-out

Question 28

Component-based software development is generally ________.

A) more expensive than a traditional approach
B) very slow
C) vertical
D) horizontal

Question 29

In ________, we assemble software from independent units that are limited in scope but are well-defined, can be replaced and, given the right functionality, can be recombined into more than one application and in more than one context.

A) a vertical approach
B) component-based development
C) SDLC
D) a waterfall approach

Question 30

A component is a(n) ________ unit of software that provides services specified by one or more interfaces.

A) encapsulated
B) independent
C) replaceable
D) all of the above

Question 31

A component is ________.

A) not language-specific
B) platform-specific
C) binary
D) all of the above

Question 32

A component is identified by one or more interfaces that act as ________ between the component and its clients.

A) contracts
B) application software
C) an interface
D) a database system

Question 33

________ properties are those services for which the component was created and are exposed through one or more interfaces.

A) Non-functional
B) Functional
C) Component-specific
D) all of the above

Question 34

When describing the component itself, the version number, copyright, performance, and security are part of ________.

A) non-functional properties
B) non-specifics properties
C) functional properties
D) machine-specific properties

Question 35

Components can be modeled as ________.

A) simple icons
B) black boxes
C) class diagrams
D) any of the above

Question 36

Interfaces lack implementation; they must be supported by ________ classes.

A) concrete
B) abstract
C) super
D) multiple

Question 37

The relationships between components are modeled through a(n) ________.

A) activity diagram
B) UML diagrams
C) component diagram
D) interface diagrams

Question 38

Components offer services only through ________.

A) relationships
B) interfaces
C) other objects
D) superclasses

Question 39

One essential purpose of component-based architecture is to manage ________.

A) the operating system
B) the user interface
C) complexity
D) inheritance

Question 40

Developing a reusable component for ________ use is more difficult because you have no control over how and where the component will be used.

A) commercial
B) personal
C) enterprise
D) software

Question 41

A design component is a one that helps build a solution.

Question 42

Design components emerge from the patterns identified in the analysis phase.

Question 43

The two major reuse concepts are analysis and design.

Question 44

Complex products are built as monolithic objects.

Question 45

We can use the concept of reuse only for developing products.

Question 46

Reuse in software development is an afterthought of the normal course of development.

Question 47

Reuse can embrace any method or artifact in software development.

Question 48

The most obvious, reliable, and effective mechanism for reuse is a component.

Question 49

Patterns are formed from repeated experience in solving problems.

Question 50

Like components, patterns are ready-to-use and need not be adapted to specific problems.

Question 51

A Web service is a service that provides platform-independent application logic to consumers across the Web via standard protocols.

Question 52

Methodology and patterns are the same and both provide the outline of a solution.

Question 53

Inheritance is an important mechanism in object-oriented technology.

Question 54

The concept of inheritance is an abstraction that covers only similar concrete situations.

Question 55

In software system development, without inheritance, you need to repeat the code that satisfies the requirements wherever it is needed.

Question 56

A class can implement multiple interfaces, shared with other classes or exclusively its own.

Question 57

It is usually "service" objects, not business objects, that acquire multiple interfaces.

Question 58

Inheritance can be applied without the mechanism of inheritance; that is, inheritance is not constrained by technology.

Question 59

Reuse by composition is static.

Question 60

Building products from well-tested components increases the costs of development.

Question 61

A component is a relatively independent, encapsulated, and replaceable unit of software that provides services specified by one or more interfaces.

Question 62

A component is language-specific.

Question 63

A component's interface is NOT separate from its implementation.

Question 64

As with objects, communication with components is conducted by exchanging messages.

Question 65

Since a component is designed for reuse, it is not replaceable.

Question 66

Software components are not applications, but they help build applications.

Question 67

Objects are language-neutral, while components are language-dependent.

Question 68

Components can be used by any client, be it an application or another component.

Question 69

Components can be modeled both from the outside or from the inside.

Question 70

Components can be modeled only as a black box.

Question 71

A diagram known as a wiring diagram shows how the pieces of the information system are "wired together."

Question 72

To develop a component-based information system, we first need to develop components.

Question 73

It is difficult to add or remove services in a component-based system or application.

Question 74

Design components must be highly generalized to work with all kinds of solutions.

Question 75

Components must be tested only within the framework that they will be used.

Question 76

Design decisions and artifacts that concern components arrive from two opposite directions ? architectural and generalization.

Question 77

In component-based development, delivery of components forms a set of major milestones.

Question 78

In a component-based system, each component must have its own independent delivery process and event.

Question 79

The idea that component-based development produces an estimated date for the delivery of the final product that is more realistic and attainable is completely false.

Question 80

What are the advantages of reuse?