Deck 1: Introduction to Computers and Java

Question 1

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

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

Answer 1

D

Question 2

RAM is usually

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

Answer 2

B

Question 3

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

Answer 3

True

Question 4

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

Question 5

While __________ 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

Question 6

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

Question 7

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

Question 8

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

Question 9

Validating the results of a program is important to

A) correct runtime errors
B) make sure the program solves the original problem
C) create a model of the program
D) correct syntax error

Question 10

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

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

Question 11

Variables are

A) symbolic names made up by the programmer and once created, their values cannot be changed
B) operators that perform operations on one or more operands
C) symbolic names made up by the programmer that represent memory locations
D) reserved words

Question 12

Software refers to

A) programs
B) the physical components a computer is made of
C) firmware
D) data stored in RAM

Question 13

Java source files end with the .class extension.

Question 14

Assume you are at the operating system command line and want to use the following command to compile a program:
javac MyClass.java
Before entering the command you must

A) close all open 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 15

An object typically hides its data but allows outside code access to

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

Question 16

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 17

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

Question 18

Compiled byte code is also called source code.

Question 19

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

Question 20

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

Question 21

A(n) __________ is used to write computer programs.

A) pseudocode document
B) operating system
C) application
D) programming language

Question 22

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

A) are nonexistent
B) must be re-compiled for each different machine before they can be run
C) are highly portable
D) cannot run on computers with different operating systems

Question 23

The end of a Java statement is indicated by a ________.

A) bracket (})
B) asterisk (*)
C) semicolon (;)
D) colon (:)

Question 24

Computers can do many different jobs because they are

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

Question 25

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

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

Question 26

The central processing unit (CPU) consists of two parts which are

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 logic unit (ALU) and main memory

Question 27

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 28

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 29

One type of design tool used by programmers when creating a model of a program is

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

Question 30

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

A) defining and modeling the problem
B) entering code and compiling it
C) testing and debugging
D) All of these are parts of the programming process

Question 31

A set of programming language statements that perform a specific task is a(n)

A) pseudocode chart
B) source code
C) object
D) procedure

Question 32

A runtime error is usually the result of

A) a logical error
B) a syntax error
C) a compiler error
D) bad data

Question 33

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

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

Question 34

A computer program is

A) the same as main memory
B) only used for desktop computers
C) a set of instructions that allow the computer to solve a problem or perform a task
D) another name for an operating system

Question 35

The data contained in an object is known as

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

Question 36

Key words are

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

Question 37

What is syntax?

A) the rules that must be followed when writing a program
B) the words that have a special meaning in the programming language
C) the symbols or words that perform operations in a program
D) the words or characters that are defined by the programmer

Question 38

There are __________ bits in a byte.

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

Question 39

The original name for Java was

A) *7
B) Oak
C) HotJava
D) JavaScript

Question 40

A cross between human language and a programming language is called

A) a compiler
B) pseudocode
C) the Java Virtual Machine
D) the Java language