Deck 1: Introduction

Question 1

When executing a program, the processor reads each program instruction from

A) secondary memory (storage)
B) the Internet
C) registers stored in the processor
D) main memory
E) Any of these

Answer 1

D

Question 2

All information is stored in the computer using binary numbers.

Answer 2

True

Question 3

A Java program is best classified as

A) hardware
B) software
C) storage
D) processor
E) input

Answer 3

B

Question 4

Java is an object-oriented programming language.

Question 5

System.out.print is used in a program to denote that a documentation comment follows.

Question 6

Objects are defined by a class that describes the characteristics common to all instances of the class.

Question 7

Inheritance is a form of software reuse.

Question 8

Code placed inside of comments will not be compiled and, therefore, will not execute.

Question 9

Polymorphism is the idea that we can refer to multiple types of related objects in consistent ways.

Question 10

Reserved words in Java can be redefined by the programmer to mean something other than their original intentions.

Question 11

Six bits can be used to represent __________ distinct items or values.

A) 6
B) 20
C) 24
D) 32
E) 64

Question 12

The Java compiler is able to find all programmer errors.

Question 13

In a Java program, dividing by zero is a syntax error.

Question 14

During translation, the compiler puts its output (the compiled Java program) into ROM.

Question 15

In Java, identifiers may be of any length up to a limit determined by the compiler.

Question 16

The word Public is a reserved word.

Question 17

Which memory capacity is the largest?

A) 1,500,000,000,000 bytes
B) 100 gigabytes
C) 3,500,000 kilobytes
D) 10 terabytes
E) 12,000,000 megabytes

Question 18

In a Java program, dividing by zero is a syntax error.

Question 19

Java byte codes are directly executable whereas Java source code is not.

Question 20

Java is a case-sensitive language which means Current, CURRENT, and current will all reference the same identifier.

Question 21

For a computer to communicate over the Internet, it must use

A) the TCP protocol
B) the IP protocol
C) the combined TCP/IP protocol
D) the Ethernet protocol
E) the ARPANET protocol

Question 22

In order for a computer to be accessible over a computer network, the computer needs its own

A) MODEM
B) communication line
C) network address
D) packet
E) router

Question 23

Once we have implemented a solution, we are not done with the problem because

A) the solution may not be the best (most efficient)
B) the solution may have errors and need testing and fixing
C) the solution may, at a later date, need revising to handle new specifications
D) the solution may, at a later date, need revising because of new programming language features
E) All of these

Question 24

What comment might be added to explain the following instruction? System.out.println("Hello World");

A) // prints "Hello World" to the screen
B) //prints a message
C) //used to demonstrate an output message
D) //
E) // meaningless instruction

Question 25

A URL (Uniform Resource Locator) specifies the address of a

A) computer on any network
B) computer on the Internet
C) local area network (LAN) on the Internet
D) a document or other type of file on the Internet
E) a Java program on the Internet

Question 26

The main method for a Java program is defined by

A) public static main()
B) public static main(String[] args);
C) public static main(String[] args)
D) private static main(String[] args)
E) The main method could be defined by all of these except B

Question 27

Java is an example of a(n)

A) machine language
B) Assembly language
C) high-level language
D) fourth generation language
E) both high-level and fourth generation language

Question 28

Volatility is a property of

A) RAM
B) ROM
C) disk
D) software
E) computer networks

Question 29

What does the following line of Java code do? //System.out.println("Hello");

A) nothing
B) cause Hello to be output
C) cause a syntax error
D) cause ("Hello") to be output
E) There is no way to tell without executing the code.

Question 30

Which character belowis not allowed in an identifier?

A) $
B) _
C) 0
D) 1
E) ^

Question 31

Java is similar in syntax to which of the following high-level languages?

A) Pascal
B) Ada
C) C++
D) FORTRAN
E) BASIC

Question 32

Comments should

A) rephrase all the code to explain it in English
B) be insightful and explain the intention of an instruction or block of code
C) only be included with code that is difficult to understand
D) be used to define variables that have hard to understand names
E) All of these

Question 33

Binary numbers are composed entirely of

A) 0s
B) 1s
C) 0s and 1s
D) any digits between 0 and 9
E) 0s, 1s, and 2s

Question 34

A unique aspect of Java that allows code compiled on one machine to be executed on a machine with a different hardware platform is Java's

A) bytecodes
B) syntax
C) use of objects
D) use of exception handling
E) All of these

Question 35

It is important to dissect a problem into manageable pieces before trying to solve the problem because

A) most problems are too complex to be solved as a single, large activity
B) most problems are solved by multiple people and it is easy to assign each piece to a separate person
C) ir is easier to integrate small pieces of a program into one program than it is to integrate one big chunk of code into one program
D) the first solution may not solve the problem correctly
E) All of these

Question 36

Which of the following is a legal Java identifier?

A) i
B) class
C) 1likeclass!
D) idon'tlikeclass
E) i-like-class

Question 37

Which phase of the fetch-decode-execute cycle might use a circuit in the arithmetic-logic unit?

A) fetch
B) decode
C) execute
D) during fetch or execute, but not decode
E) any of the phases

Question 38

The ability to directly obtain a stored item by referencing its address is known as

A) random access
B) sequential access
C) read-only access
D) fetch access
E) volatility

Question 39

Which of the following is not syntactically legal in Java?

A) System.out.println("Hi");
B) public class Foo
C) s t a t i c main(String[] args)
D) {}
E) only A is legally valid; all the others are illegal

Question 40

Of the following, which statement is not true regarding Java as a programming language?

A) Java is a relatively recent language; it was introduced in 1995.
B) Java is a language whose programs do not require translating into machine language before they are executed.
C) Java is an object-oriented language.
D) Java is a language that embraces the idea of writing programs to be executed with the World Wide Web.
E) All of these are true

Question 41

A color image is broken down into individual pixels (points), each of which is represented by

A) a 1 for white and a 0 for black
B) 3 values denoting the intensity of red, green, and blue in the image
C) a single number indicating the intensity of color between white and black
D) two numbers, where one indicates where the color is between white and black and the other denotes the brightness
E) None of these; it is not possible to represent color

Question 42

Provide a brief description of the roles of the following hardware elements (that is, what each is used for):
a) CPU
b) Main memory
c) Secondary memory devices
d) Input/Output devices

Question 43

What is wrong with the following class definition?
public class Program1
{
public static void main(String[ ] args)
{
System.out.println("My first Java program")
}
}

Question 44

Which of the following is a legal Java identifier?

A) 1ForAll
B) oneForAll
C) one/4/all
D) 1_4_all
E) 1forall

Question 45

Given the following class definition, what are the reserved words and what are the identifiers?
public class Program3
{
public static void main(String[] args)
{
System.out.println("My third Java program");
}
}

Question 46

Rewrite the following program with better formatting to make it easier to read.
public
class
MyProgram
{ public static void
main(
String[]
args)
{ System.out.println(
"Wow, this is messed up!"
);
} }

Question 47

Using Java naming convention, which of the following would be a good variable name for the current value of a stock?

A) curstoval
B) theCurrentValueOfThisStock
C) currentStockVal
D) csv
E) current

Question 48

Mistyping println as printn will result in

A) a syntax error
B) a run-time error
C) a logical error
D) no error
E) the statement being converted to a comment

Question 49

There are a number of reserved words in Java that have no current meaning (denoted with an * in figure 1.18 in the text). Why?

Question 50

What is wrong with the following println statement?
System.out.println("My fourth Java Program);

Question 51

What is the output of the following code when the main method is executed?
public class Question4
{
public static void main(String[] args)
{
System.out.println("hi there");
System.out.println(" ");
System.out.println("how are you doing today? ");
}
}

Question 52

An error in a program that results in the program outputtinh $100 instead of the correct answer, $250, is a

A) compiler error
B) syntax error
C) run-time error
D) logical error
E) snafu

Question 53

Provide identifier names that would be used to represent a person's social security number, income tax withheld, and net pay.

Question 54

Rewrite the following comment so that is can appear over multiple lines.
// This is one really enormously long comment that might run off the page

Question 55

What is wrong with the following class definition?
public class Program2
public static void main(String[] args)
{
System.out.println("My second Java program");
}

Question 56

Examine figure 1.7 before answering this question. What 8-bit value comes immediately before and what 8-bit value comes immediately after 10010111?

Question 57

Provide a brief explanation of the role of main memory, the control unit, the arithmetic logic unit, and registers. (Refer to figure 1.13 in the text)

Question 58

Which of the following characters does not need to have an associated closing character in a Java program?

A) {
B) (
C) [
D) <
E) All of these require closing characters

Question 59

Which of the following is true regarding Java syntax and semantics?

A) A Java compiler can determine if you have followed proper syntax but not proper semantics.
B) A Java compiler can determine if you have followed proper semantics but not proper syntax.
C) A Java compiler can determine if you have followed both proper syntax and proper semantics.
D) A Java compiler cannot determine if you have followed either proper syntax or proper semantics.
E) A Java compiler can determine if you have followed proper syntax but not proper semantics only if you follow the Java naming convention rules.

Question 60

A document of text is 15 pages long. Each page contains approximately 200 words and the average length of each word is 5 characters. Also assume one blank space between each word and no punctuation. How many bytes will it take to store this document in memory or on disk using ASCII?

Question 61

Correct all the syntax errors in the following program.
Public Class Program \\ A problem program
(
Public static voided main[Strings() args]
{
system.out.println('This program'); \* oh, my... *\
system.out.println('has several syntax errors'); \*
lots of errors *\
}
)

Question 62

Name five of the fundamental terms which encompass object-oriented programming.

Question 63

Write a Java program that will display the following three lines when it is run:
*
* * *
* * * * *

Question 64

Write a Java program that will output on two separate lines the names of the authors of this textbook.