Deck 1: Introduction to Computers and Java

Question 1

In the programming process which of the following is not involved in defining what the program is to do:

A) Process
B) Compile code
C) Input
D) Output
E) Purpose

Answer 1

B

Question 2

____________ results in only the object's methods being able to directly access and make the changes to the object's data.

A) Component reusability
B) Classes
C) Data hiding
D) Procedures

Answer 2

C

Question 3

The purpose of validating the results of the program is:

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

Answer 3

D

Question 4

Byte code instructions are:

A) Another name for source code
B) Syntax errors
C) Machine code instructions
D) Read and interpreted by the JVM

Question 5

Variables are:

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

Question 6

RAM is usually:

A) A static type of memory,used for permanent storage
B) A volatile type of memory,used only for temporary storage
C) Secondary storage
D) An input/output device

Question 7

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

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

Question 8

A byte is a collection of:

A) Four bits
B) Six bits
C) Eight bits
D) A dollar

Question 9

Computers can do many different jobs because they are:

A) Electronic
B) Programmable
C) Hardware
D) Software

Question 10

This is a special language used to write computer programs.

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

Question 11

The original name for Java was

A) Java
B) HotJava
C) Elm
D) Oak

Question 12

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

A) Disk drive
B) Compiler
C) ALU
D) Pseudocode

Question 13

Another term for programs is :

A) Hardware
B) Software
C) Firmware
D) Peopleware

Question 14

An operating system can be categorized according to:

A) The number of users they can accommodate
B) The number of tasks they can perform at one time
C) Both of the above
D) Neither of the above

Question 15

The major components of a typical computer system consist of:

A) The CPU
B) Input/output devices
C) Main memory
D) Secondary storage devices
E) All of the above

Question 16

Software refers to:

A) The physical components that a computer is made of.
B) Firmware
C) Programs
D) Peopleware

Question 17

A runtime error is usually the result of:

A) A logical error
B) A syntax error
C) A compilation error
D) Bad data

Question 18

This is a software entity that contains data and procedures.

A) Method
B) Object
C) Class
D) Program

Question 19

Syntax is:

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

Question 20

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) Save the program with the .comp extension
B) Execute the java.sun.com program
C) Make sure you are in the same directory or folder where MyClass.java is located
D) Close all other Windows on your computer system

Question 21

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

Question 22

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

Question 23

Application software refers to:

A) The operating system
B) Pseudocode
C) Key words
D) The programs that make the computer useful to the user

Question 24

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

A) Object
B) Compiler
C) Procedure
D) Pseudocode

Question 25

Java was developed by

A) Microsoft.
B) IBM
C) Sun Microsystems
D) Hewlett-Packard

Question 26

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

Question 27

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

Question 28

The data contained in an object is known as:

A) Methods
B) Attributes
C) Classes
D) Atriums

Question 29

Which of the following will compile a program called ReadIt?

A) java ReadIt.java
B) java ReadIt.javac
C) javac ReadIt.java
D) javac ReadIt.javac

Question 30

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

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

Question 31

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

A) Must be re-compiled for each different machine it is run on
B) Cannot run on Linux systems
C) Are non-existent
D) Are highly portable

Question 32

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

Question 33

Which of the following will run the compiled program ReadIt?

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

Question 34

Key words are:

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

Question 35

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

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

Question 36

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

A) Design
B) Testing
C) Debugging
D) All the above are parts of the programming process

Question 37

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

Question 38

When an object's internal data is hidden from outside code and access to that data is restricted to the object's methods,the data is protected from accidental corruption.

Question 39

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 40

The contents of a variable cannot be changed while the program is running.

Question 41

Compiled byte code is also called source code.

Question 42

Java source files end with the .class extension.