Question 1

Which of the following statements is false?

Accepted Answer

A) Each class can be used only once to build many objects. 
B) Reuse helps you build more reliable and effective systems,because existing classes and components often have undergone extensive testing,debugging and performance tuning. 
C) Just as the notion of interchangeable parts was crucial to the Industrial Revolution,reusable classes are crucial to the software revolution that has been spurred by object technology. 
D) Avoid reinventing the wheel-use existing high-quality pieces wherever possible.This software reuse is a key benefit of object-oriented programming. 
A) Each class can be used only once to build many objects. 
B) Reuse helps you build more reliable and effective systems,because existing classes and components often have undergone extensive testing,debugging and performance tuning. 
C) Just as the notion of interchangeable parts was crucial to the Industrial Revolution,reusable classes are crucial to the software revolution that has been spurred by object technology. 
D) Avoid reinventing the wheel-use existing high-quality pieces wherever possible.This software reuse is a key benefit of object-oriented programming. A

Question 2

Which of the following statements about Java Class Libraries is false:

Accepted Answer

A) Java class libraries consist of classes that consist of methods that perform tasks. 
B) Java class libraries are also known as Java APIs (Application Programming Interfaces). 
C) An advantage of using Java class libraries is saving the effort of designing,developing and testing new classes. 
D) Java class libraries are not portable 
A) Java class libraries consist of classes that consist of methods that perform tasks. 
B) Java class libraries are also known as Java APIs (Application Programming Interfaces). 
C) An advantage of using Java class libraries is saving the effort of designing,developing and testing new classes. 
D) Java class libraries are not portable D

Question 3

Which of the following statements is false?

Accepted Answer

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. 
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. D

Question 4

Which of the following data items are arranged from the smallest to the largest in the data hierarchy.

Accepted Answer

A) records,characters,fields,bits,files. 
B) bits,files,fields,records,characters. 
C) fields,characters,bits,files,records. 
D) bits,characters,fields,records,files. 
A) records,characters,fields,bits,files. 
B) bits,files,fields,records,characters. 
C) fields,characters,bits,files,records. 
D) bits,characters,fields,records,files.

Question 5

Which of the following statements is true?

Accepted Answer

A) The Internet is just a network of computers. 
B) The internet is now an Internet of Things. 
C) Each thing in the Internet of things is an object with an IP address. 
D) Each thing in the Internet of Things must have the ability to send data automatically over a network. 
A) The Internet is just a network of computers. 
B) The internet is now an Internet of Things. 
C) Each thing in the Internet of things is an object with an IP address. 
D) Each thing in the Internet of Things must have the ability to send data automatically over a network.

Question 6

Which of the following statements is true?

Accepted Answer

A) When you drive a car,pressing its gas pedal sends a message to the car to perform a task-that is,to go faster. 
B) You send messages to an object;each message is implemented as a method call that tells a method of the object to perform its task. 
C) A program might call a bank-account object's deposit method to increase the account's balance. 
D) All of the above statements are true. 
A) When you drive a car,pressing its gas pedal sends a message to the car to perform a task-that is,to go faster. 
B) You send messages to an object;each message is implemented as a method call that tells a method of the object to perform its task. 
C) A program might call a bank-account object's deposit method to increase the account's balance. 
D) All of the above statements are true.

Question 7

Which of the following statements is true?

Accepted Answer

A) Performing a task in a program requires a method. 
B) A method houses the program statements that actually perform its tasks. 
C) The method hides its statements from its user,just as the accelerator pedal of a car hides from the driver the mechanisms of making the car go faster. 
D) All of the above. 
A) Performing a task in a program requires a method. 
B) A method houses the program statements that actually perform its tasks. 
C) The method hides its statements from its user,just as the accelerator pedal of a car hides from the driver the mechanisms of making the car go faster. 
D) All of the above.

Question 8

The software that contains the core components of the operating system is the ________.

Accepted Answer

A) colonel. 
B) central processing unit 
C) core 
D) kernel. 
A) colonel. 
B) central processing unit 
C) core 
D) kernel.

Question 9

Which of the following languages is used primarily for scientific and engineering applications?

Accepted Answer

A) Fortran. 
B) COBOL. 
C) Pascal. 
D) Basic. 
A) Fortran. 
B) COBOL. 
C) Pascal. 
D) Basic.

Question 10

Which of the following statements is false?

Accepted Answer

A) The ARPANET is the precursor to today's Internet. 
B) Today's fastest Internet speeds are on the order of trillionsof bits per second with quadrillion-bit-per-second speeds on the horizon. 
C) Although the ARPANET enabled researchers to network their computers,its main benefit proved to be the capability for quick and easy communication via what came to be known as electronic mail (e-mail). 
D) The protocol (set of rules)for communicating over the ARPANET became known as the Transmission Control Protocol (TCP).TCP ensured that messages,consisting of sequentially numbered pieces called packets,were properly routed from sender to receiver,arrived intact and were assembled in the correct order. 
A) The ARPANET is the precursor to today's Internet. 
B) Today's fastest Internet speeds are on the order of trillionsof bits per second with quadrillion-bit-per-second speeds on the horizon. 
C) Although the ARPANET enabled researchers to network their computers,its main benefit proved to be the capability for quick and easy communication via what came to be known as electronic mail (e-mail). 
D) The protocol (set of rules)for communicating over the ARPANET became known as the Transmission Control Protocol (TCP).TCP ensured that messages,consisting of sequentially numbered pieces called packets,were properly routed from sender to receiver,arrived intact and were assembled in the correct order.

Question 11

Which of the following statements is false?

Accepted Answer

A) As of April 2013,more than 1.5 million Android devices (smartphones,tablets,etc. )were being activated daily. 
B) By October 2013,a Strategy Analytics report showed that Android had 81.3% of the global smartphone market share,compared to 13.4% for Apple,4.1% for Microsoft and 1% for Blackberry. 
C) Android devices now include smartphones,tablets,e-readers,robots,jet engines,NASA satellites,game consoles,refrigerators,televisions,cameras,health-care devices,smartwatches,automobile in-vehicle infotainment systems (for controlling the radio,GPS,phone calls,thermostat,etc. )and more. 
D) You can download apps directly onto your Android device only through Google Play. 
A) As of April 2013,more than 1.5 million Android devices (smartphones,tablets,etc. )were being activated daily. 
B) By October 2013,a Strategy Analytics report showed that Android had 81.3% of the global smartphone market share,compared to 13.4% for Apple,4.1% for Microsoft and 1% for Blackberry. 
C) Android devices now include smartphones,tablets,e-readers,robots,jet engines,NASA satellites,game consoles,refrigerators,televisions,cameras,health-care devices,smartwatches,automobile in-vehicle infotainment systems (for controlling the radio,GPS,phone calls,thermostat,etc. )and more. 
D) You can download apps directly onto your Android device only through Google Play.

Question 12

________ is a graphical language that allows people who design software systems to use an industry stan?dard notation to represent them.

Accepted Answer

A) The Unified Graphical Laguage 
B) The Unified Design Language 
C) The Unified Modeling Language 
D) None of the above 
A) The Unified Graphical Laguage 
B) The Unified Design Language 
C) The Unified Modeling Language 
D) None of the above

Question 13

The command ________ executes a Java application.

Accepted Answer

A) run 
B) javac 
C) java 
D) None of the above 
A) run 
B) javac 
C) java 
D) None of the above

Question 14

Which of the following statements is false?

Accepted Answer

A) Operating systems are software systems that make using computers more convenient for users,application developers and system administrators. 
B) Operating systems provide services that allow each application to execute safely,efficiently and concurrently (i.e. ,in parallel)with other applications. 
C) Popular desktop operating systems include Linux and Windows. 
D) Popular mobile operating systems used in smartphones and/or tablets include Google's Android,Apple's iOS (for its iPhone,iPad and iPod Touch devices),Windows Phone 8 and Mac OS X. 
A) Operating systems are software systems that make using computers more convenient for users,application developers and system administrators. 
B) Operating systems provide services that allow each application to execute safely,efficiently and concurrently (i.e. ,in parallel)with other applications. 
C) Popular desktop operating systems include Linux and Windows. 
D) Popular mobile operating systems used in smartphones and/or tablets include Google's Android,Apple's iOS (for its iPhone,iPad and iPod Touch devices),Windows Phone 8 and Mac OS X.

Question 15

Which of the following statements is false?

Accepted Answer

A) An object's attributes are specified as part of the object's class. 
B) A bank-account object would likely have a balance attribute that represents the amount of money in the account. 
C) Each bank-account object knows the balance in the account it represents,but not the balances of the other accounts in the bank. 
D) Attributes are specified by the class's methods. 
A) An object's attributes are specified as part of the object's class. 
B) A bank-account object would likely have a balance attribute that represents the amount of money in the account. 
C) Each bank-account object knows the balance in the account it represents,but not the balances of the other accounts in the bank. 
D) Attributes are specified by the class's methods.

Question 16

A huge variety of networking hardware and software appeared.One challenge was to enable these different networks to communicate with each other.ARPA accomplished this by developing the ________,which created a true "network of networks," the current architecture of the Internet.

Accepted Answer

A) Web Protocol (WP) 
B) ARPA Protocol (AP) 
C) Internet Protocol (IP) 
D) Newrok Protocol (NP) 
A) Web Protocol (WP) 
B) ARPA Protocol (AP) 
C) Internet Protocol (IP) 
D) Newrok Protocol (NP)

Question 17

Which language was developed by Microsoft in the early 1990s to simplify the development of Windows applications?

Accepted Answer

A) Visual C#. 
B) Python. 
C) Objective-C. 
D) Visual Basic. 
A) Visual C#. 
B) Python. 
C) Objective-C. 
D) Visual Basic.

Question 18

Which of the following statements is true?

Accepted Answer

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. 
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.

Question 19

Java was originally developed for:

Accepted Answer

A) Operating systems development. 
B) Intelligent consumer devices. 
C) Personal computers. 
D) Distributed computing. 
A) Operating systems development. 
B) Intelligent consumer devices. 
C) Personal computers. 
D) Distributed computing.

Question 20

Which of the following is not a key organization in the open-source community?

Accepted Answer

A) Apache. 
B) SourceForge. 
C) Firefox. 
D) Eclipse. 
A) Apache. 
B) SourceForge. 
C) Firefox. 
D) Eclipse.

Exam 1: Introduction to Computers and Java

Which of the following statements is false?

Which of the following statements about Java Class Libraries is false:

Which of the following statements is false?

Which of the following data items are arranged from the smallest to the largest in the data hierarchy.

Which of the following statements is true?

Which of the following statements is true?

Which of the following statements is true?

The software that contains the core components of the operating system is the ________.

Which of the following languages is used primarily for scientific and engineering applications?

Which of the following statements is false?

Which of the following statements is false?

________ is a graphical language that allows people who design software systems to use an industry stan?dard notation to represent them.

The command ________ executes a Java application.

Which of the following statements is false?

Which of the following statements is false?

A huge variety of networking hardware and software appeared.One challenge was to enable these different networks to communicate with each other.ARPA accomplished this by developing the ________,which created a true "network of networks," the current architecture of the Internet.

Which language was developed by Microsoft in the early 1990s to simplify the development of Windows applications?

Which of the following statements is true?

Java was originally developed for:

Which of the following is not a key organization in the open-source community?

Introduction to Java Applications

Introduction to Classes and Objects

Control Statements: Part 1

Control Statements: Part 2

Methods: a Deeper Look

Arrays and Arraylists

Classes and Objects: a Deeper Look

Object Oriented Programming: Inheritance

Object-Oriented Programming: Polymorphism

Exception Handling

Gui Components: Part 1

Graphics and Java 2D

Strings

Files,streams and Object Serialization

Generic Collections

Lambdas

Recursion

Searching, Sorting and Big O

Generic Classes and Methods

Custom Generic Data Structures

Concurrency

Accessing Databases With Jdbc

JavaFX

Filters