Chapter 1 Introduction to Computers and Java
Section 1.1 Introduction
1.1 Q1: Which of the following statements is false?
a. Object-oriented programming is today's key programming methodology.
b. Java has become the language of choice for implementing Internet-based applications and software for
devices that communicate over a network.
c. Software commands computer hardware to perform tasks.
d. In use today are more than a trillion general-purpose computers and trillions more Java-enabled
cellphones, smartphones and other handheld devices.
ANS: d. In use today are more than a trillion general-purpose computers and trillions more Java-enabled
cellphones, smartphones and other handheld devices.
1.1 Q2: Which edition of Java is geared toward developing large-scale, distributed networking applications
and web-based applications?
a. Standard Edition.
b. Industrial Edition.
c. Enterprise Edition.
d. Micro Edition.
ANS: c. Enterprise Edition.
Section 1.2 Computers: Hardware and Software
1.2 Q1: Which of the following is most closely associated with Moore's Law?
a. Every year or two, the price of computers has approximately doubled.
b. Object-oriented programming uses less memory than previous software-development methodologies.
c. Demand for communications bandwidth is decreasing dramatically each year.
d. Every year or two, the capacities of computers have approximately doubled without any increase in
price.
ANS: d. Every year or two, the capacities of computers have approximately doubled without any increase
in price.
,1.2 Q2: Which of the following statements is false?
a. A quadrillion-instruction-per-section computer can perform in one second more than 100,000
instructions for every person on the planet.
b. Today's key programming methodology is object-oriented programming.
c. The vast majority of the microprocessors produced each year are used in general-purpose computers.
d. Computers process data under the control of sets of instructions called computer programs..
ANS: c. The vast majority of the microprocessors produced each year are used in general-purpose
computers. Actually, they're used in embedded systems.
Section 1.3 Data Hierarchy
1.3 Q1: Which of the following statements is false?
a. The impressive functions performed by computers involve only the simplest manipulations of 1s and 2s .
b. ASCII is a popular subset of Unicode.
c. Fields are composed of characters or bytes.
d. On some operating systems, a file is viewed simply as a sequence of bytes.
ANS: a. The impressive functions performed by computers involve only the simplest manipulations of 1s
and 2s . It's 1s and 0s.
1.3 Q2: Which of the following data items are arranged from the smallest to the largest in the data
hierarchy.
a. records, characters, fields, bits, files.
b. bits, files, fields, records, characters.
c. fields, characters, bits, files, records.
d. bits, characters, fields, records, files.
ANS: d. bits, characters, fields, records, files.
Section 1.4 Computer Organization
1.4 Q1: Which of the following is not one of the six logical units of a computer?
a. Input unit.
b. Output unit.
,c. Central processing unit.
d. Printer.
ANS: d. Printer.
1.4 Q2: Which of the following statements is false?
a. Speaking to your computer is a form of input.
b. Playing a video is an example of output.
c. A multi-core processor implements several processors on a single integrated-circuit chip.
d. Information in the memory unit is persistent—it is retained when the computer's power is turned off.
ANS: Information in the memory unit is persistent—it is retained when the computer's power is turned off.
Actually the information is volatile—it's lost when power is turned off.
Section 1.5 Machine Languages, Assembly Languages and High-
Level Languages
1.5 Q1: Which of the following is not one of the three general types of computer languages?
a. Machine languages.
b. Assembly languages.
c. High-Level languages.
d. Spoken languages.
ANS: d. Spoken languages.
1.5 Q2: Which of the following statements is true?
a. Interpreted programs run faster than compiled programs.
b. Compilers translate high-level language programs into machine language programs.
c. Interpreter programs typically use machine language as input.
d. None of the above.
ANS: b. Compilers translate high-level language programs into machine language programs.
, Section 1.6 Introduction to Object Technology
1. 6 Q1: ________ is a graphical language that allows people who design software
systems to use an industry standard notation to represent them.
a. The Unified Graphical Laguage
b. The Unified Design Language
c. The Unified Modeling Language
d. None of the above
ANS: c. The Unified Modeling Language.
1. 6 Q2: ________ models software in terms similar to those that people use to describe real-world objects.
a. Object-oriented programming
b. Object-oriented design
c. Procedural programming
d. None of the above
ANS: b. Object-oriented design.
1.6 Q3: Which statement is false?
a. Classes are reusable software components.
b. A class is to an object as a blueprint is to a house.
c. Performing a task in a program requires a method.
d. A class is an instance of its object.
ANS: A class is an instance of its object. The reverse is true.
Section 1.7 Operating Systems
1.7 Q1 Which of the following statements is false?
a. The concepts of icons, menus and windows were originally developed by Xerox PARC.
b. Windows is an open source operating system.
c. The software that contains the core components of the operating system is called the kernel.
Section 1.1 Introduction
1.1 Q1: Which of the following statements is false?
a. Object-oriented programming is today's key programming methodology.
b. Java has become the language of choice for implementing Internet-based applications and software for
devices that communicate over a network.
c. Software commands computer hardware to perform tasks.
d. In use today are more than a trillion general-purpose computers and trillions more Java-enabled
cellphones, smartphones and other handheld devices.
ANS: d. In use today are more than a trillion general-purpose computers and trillions more Java-enabled
cellphones, smartphones and other handheld devices.
1.1 Q2: Which edition of Java is geared toward developing large-scale, distributed networking applications
and web-based applications?
a. Standard Edition.
b. Industrial Edition.
c. Enterprise Edition.
d. Micro Edition.
ANS: c. Enterprise Edition.
Section 1.2 Computers: Hardware and Software
1.2 Q1: Which of the following is most closely associated with Moore's Law?
a. Every year or two, the price of computers has approximately doubled.
b. Object-oriented programming uses less memory than previous software-development methodologies.
c. Demand for communications bandwidth is decreasing dramatically each year.
d. Every year or two, the capacities of computers have approximately doubled without any increase in
price.
ANS: d. Every year or two, the capacities of computers have approximately doubled without any increase
in price.
,1.2 Q2: Which of the following statements is false?
a. A quadrillion-instruction-per-section computer can perform in one second more than 100,000
instructions for every person on the planet.
b. Today's key programming methodology is object-oriented programming.
c. The vast majority of the microprocessors produced each year are used in general-purpose computers.
d. Computers process data under the control of sets of instructions called computer programs..
ANS: c. The vast majority of the microprocessors produced each year are used in general-purpose
computers. Actually, they're used in embedded systems.
Section 1.3 Data Hierarchy
1.3 Q1: Which of the following statements is false?
a. The impressive functions performed by computers involve only the simplest manipulations of 1s and 2s .
b. ASCII is a popular subset of Unicode.
c. Fields are composed of characters or bytes.
d. On some operating systems, a file is viewed simply as a sequence of bytes.
ANS: a. The impressive functions performed by computers involve only the simplest manipulations of 1s
and 2s . It's 1s and 0s.
1.3 Q2: Which of the following data items are arranged from the smallest to the largest in the data
hierarchy.
a. records, characters, fields, bits, files.
b. bits, files, fields, records, characters.
c. fields, characters, bits, files, records.
d. bits, characters, fields, records, files.
ANS: d. bits, characters, fields, records, files.
Section 1.4 Computer Organization
1.4 Q1: Which of the following is not one of the six logical units of a computer?
a. Input unit.
b. Output unit.
,c. Central processing unit.
d. Printer.
ANS: d. Printer.
1.4 Q2: Which of the following statements is false?
a. Speaking to your computer is a form of input.
b. Playing a video is an example of output.
c. A multi-core processor implements several processors on a single integrated-circuit chip.
d. Information in the memory unit is persistent—it is retained when the computer's power is turned off.
ANS: Information in the memory unit is persistent—it is retained when the computer's power is turned off.
Actually the information is volatile—it's lost when power is turned off.
Section 1.5 Machine Languages, Assembly Languages and High-
Level Languages
1.5 Q1: Which of the following is not one of the three general types of computer languages?
a. Machine languages.
b. Assembly languages.
c. High-Level languages.
d. Spoken languages.
ANS: d. Spoken languages.
1.5 Q2: Which of the following statements is true?
a. Interpreted programs run faster than compiled programs.
b. Compilers translate high-level language programs into machine language programs.
c. Interpreter programs typically use machine language as input.
d. None of the above.
ANS: b. Compilers translate high-level language programs into machine language programs.
, Section 1.6 Introduction to Object Technology
1. 6 Q1: ________ is a graphical language that allows people who design software
systems to use an industry standard notation to represent them.
a. The Unified Graphical Laguage
b. The Unified Design Language
c. The Unified Modeling Language
d. None of the above
ANS: c. The Unified Modeling Language.
1. 6 Q2: ________ models software in terms similar to those that people use to describe real-world objects.
a. Object-oriented programming
b. Object-oriented design
c. Procedural programming
d. None of the above
ANS: b. Object-oriented design.
1.6 Q3: Which statement is false?
a. Classes are reusable software components.
b. A class is to an object as a blueprint is to a house.
c. Performing a task in a program requires a method.
d. A class is an instance of its object.
ANS: A class is an instance of its object. The reverse is true.
Section 1.7 Operating Systems
1.7 Q1 Which of the following statements is false?
a. The concepts of icons, menus and windows were originally developed by Xerox PARC.
b. Windows is an open source operating system.
c. The software that contains the core components of the operating system is called the kernel.
