Deck 1: Introduction to Computers and Java

Question 1

Whereas ________ is centered on creating procedures, ________ is centered on creating objects.

A) procedural programming, object-oriented programming
B) object-oriented programming, procedural programming
C) routine programming, method programming
D) procedural programming, class programming

Answer 1

A

Question 2

An object typically hides it data, but allows outside code to access

A) the pseudocode.
B) the methods that operate on the data.
C) private data members.
D) the data files.

Answer 2

B

Question 3

Computers can do many different jobs because they are

A) programmable.
B) reliable.
C) automated.
D) electronic.

Answer 3

A

Question 4

Because Java byte code is the same on all computers, compiled Java programs

A) are non-existent.
B) must be re-compiled for each different machine it is run on.
C) are highly portable.
D) cannot run on computers with different operating systems.

Question 5

Key words are

A) symbols or words that perform operations on one or more operands.
B) words or names defined by the programmer.
C) the data names in your program.
D) words that have a special meaning in the programming language.

Question 6

The original name for Java was

A) *7.
B) Oak.
C) HotJava.
D) Elm.

Question 7

Which of the following is not part of the programming process?

A) design/model
B) debugging/correcting errors
C) testing
D) All the above are parts of the programming process.

Question 8

Software refers to

A) programs.
B) the physical components that a computer is made of.
C) firmware.
D) data stored on the disk drive.

Question 9

A(n) ________ is a software entity that contains data and procedures.

A) object
B) program
C) class
D) method

Question 10

The purpose of validating the results of the program is to

A) determine if the program solves the original problem.
B) correct runtime errors.
C) create a model of the program.
D) correct syntax errors.

Question 11

RAM is usually

A) an input/output device.
B) a volatile type of memory, used only for temporary storage.
C) secondary storage.
D) a static type of memory, used for permanent storage.

Question 12

________ refers to the physical components that a computer is made of.

A) Input
B) Main memory
C) Control unit
D) Hardware

Question 13

Suppose you are at an operating system command line, and you are going to use the following command to compile a program: javac MyClass.java
Before entering the command, you must

A) close all other Windows on your computer system.
B) make sure you are in the same directory or folder where the MyClass.java file is located.
C) execute the java.sun.com program.
D) save the program with the .comp extension.

Question 14

The two primary methods of programming in use today are

A) procedural and object-oriented.
B) hardware and software.
C) practical and theoretical.
D) desktop and mobile.

Question 15

A characteristic of ________ is that only an object's methods are able to directly access and make the changes to the object's data.

A) classes
B) procedures
C) data hiding
D) component reusability

Question 16

One of the design tools used by programmers when creating a model of the program is

A) ALU.
B) pseudocode.
C) byte code.
D) syntax.

Question 17

Byte code instructions are

A) machine code instructions.
B) syntax errors.
C) read and interpreted by the JVM.
D) another name for source code.

Question 18

Which of the following commands will run the compiled Java program named ReadIt?

A) run ReadIt
B) java ReadIt.java
C) java ReadIt
D) go ReadIt

Question 19

Variables are

A) symbolic names made up by the programmer whose values cannot be changed.
B) operators that perform operations on one or more operands.
C) symbolic names made up by the programmer that represents locations in the computer's RAM.
D) reserved words.

Question 20

________ is a cross between human language and a programming language.

A) The compiler
B) Pseudocode
C) The Java Virtual Machine
D) Java

Question 21

Encapsulation refers to the combining of data and code into a single object.

Question 22

Java source files end with the .class extension.

Question 23

The Java Virtual Machine is a program that reads Java byte code instructions and executes them as they are read.

Question 24

A procedure is a set of programming language statements that, together, perform a specific task.

Question 25

Application software refers to programs that make the computer useful to the user.

Question 26

How many bits are in a byte?

A) 4
B) 8
C) 16
D) 32

Question 27

A solid-state drive has no moving parts and operates faster than a traditional disk drive.

Question 28

What is syntax?

A) Rules that must be followed when writing a program.
B) Words that have a special meaning in the programming language.
C) Symbols or words that perform operations.
D) Words or names defined by the programmer.

Question 29

Colons are used to indicate the end of a Java statement.

Question 30

________ are used to indicate the end of a Java statement.

A) Periods
B) Asterisks
C) Semicolons
D) Colons

Question 31

This is a special language used to write computer programs.

A) Pseudocode
B) Operating system
C) Application
D) Programming language

Question 32

A computer program is

A) a set of instructions that enable the computer to solve a problem or perform a task.
B) main memory.
C) pseudocode.
D) a flow chart.

Question 33

Compiled byte code is also called source code.

Question 34

Logical errors are mistakes that cause the program to produce erroneous results.

Question 35

The data contained in an object is known as

A) methods.
B) attributes.
C) classes.
D) fields.

Question 36

A runtime error is usually the result of

A) a logical error.
B) a syntax error.
C) a compilation error.
D) bad data.

Question 37

Each byte is assigned a unique number known as an address.

Question 38

Application software refers to

A) the programs that make the computer useful to the user.
B) the operating system.
C) key words.
D) pseudocode.

Question 39

This is a set of programming language statements that, together, perform a specific task.

A) pseudocode
B) compiler
C) object
D) procedure

Question 40

Internally, the central processing unit (CPU) consists of two parts:

A) the input and output devices.
B) the control unit and the arithmetic and logic unit (ALU).
C) the control unit and main memory.
D) the arithmetic and login unit (ALU) and main memory.