Question 1

What is the output of the following code snippet?

A) 4 * 412
B) 4412
C) 1612
D) 28

Accepted Answer

The answer of What is the output of the following...

Question 2

In order to translate a Java program to a class file, the computer needs to have software called a(n):
A) assembler
B) virtual machine
C) compiler
D) debugger

Accepted Answer

To translate a Java program to a class file, the computer needs to have software called a compiler. A compiler takes the source code and translates it into bytecode, which can then be executed by the Java Virtual Machine (JVM). The other options are not directly involved in the translation process. An assembler is used to translate assembly language to machine code, a virtual machine is used to execute the bytecode, and a debugger is used to find and fix errors in the code.

Question 3

The language developed by Sun Microsystems that became the Java programming language was originally designed to be simple, secure, and
A) easy to use in any language
B) available over the Internet
C) usable for many different processor types
D) environmentally friendly, or "green"

Accepted Answer

The answer of The language developed by Sun Microsystems that...

Question 4

In order to run Java programs on a computer, the computer needs to have software called a(n):
A) assembler
B) virtual machine
C) windows
D) debugger

Accepted Answer

In order to run Java programs on a computer, the computer needs to have a virtual machine that can interpret and execute the bytecode generated by the Java compiler. The virtual machine provides a platform-independent environment for executing the Java code, which means that the same code can run on different operating systems and hardware architectures. Assemblers are used to convert assembly language code into machine language instructions, debuggers are used to find and fix errors in code, and windows is an operating system that provides a graphical user interface (GUI) and other features.

Question 5

Which one of the following code snippets compiles without errors and displays the output "Hello Good Day!" on the screen?
A) System.out.print("Hello ");
System.out.println("Good Day!");
B) System.out.print("Hello );
System.out.println("Good Day!");
C) System.out.print("Hello ");
System.out.println("Good Day!")
D) System.out.print("Hello ");
System.out.println(Good Day!");

Accepted Answer

Option A has correct syntax and uses the correct methods to print "Hello " without a newline character and "Good Day!" with a newline character. Option B has a syntax error because the closing quotation mark for the "Hello " string is missing. Option C has correct syntax but does not have a newline character after "Good Day!". Option D has a syntax error because the "Good Day!" string is not enclosed in quotation marks.

Question 6

Java is said to be a "safe" programming language. What does this mean?
A) Java programs cannot cause environmental damage because they are "green".
B) Java programs can run within a browser without fear that they may attack your computer.
C) There is no way for a Java program to read or write a file.
D) Java programs cannot access data across a computer network.

Accepted Answer

Java's safety feature is largely due to its ability to run inside a virtual machine, called the Java Virtual Machine (JVM). This way, Java programs can run safely within a browser without fear of causing harm to the user's computer or its environment, a feature highly valued by internet applications.

Question 7

Consider the following pseudocode, what does it produce?
Set n = 0.
Set a = 0.
Set b = 1.
Set p = 1.
Print p.
Repeat until n equals 10
Set p = a + b.
Set a = b.
Set b = p.
Add 1 to n.
Print p.
A) 1 3 5 7 9 11 13 15 17 19 21
B) 1 1 2 3 5 8 13 21 34 55 89
C) 1 2 3 4 5 6 7 8 9 10 11
D) 1 3 6 9 12 15 18 21 24 27 30

Accepted Answer

The given pseudocode uses the Fibonacci sequence to generate the first 11 numbers of the sequence, starting from 1. The Fibonacci sequence is generated by adding the two previous numbers, starting from 0 and 1. Therefore, the output would be the sequence 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, and 89, which is best represented by option B.

Question 8

BIGMART Supermarket has different ways of awarding discounts to its customers for each purchase they make. An 8 percent discount is given on the total value of the purchase. In addition, a standard loyalty discount is given if customers have a permanent customer ID card. Your program should indicate the amount payable by the customer after the discounts. Identify the inputs that the program requires from these options:
I. The discount percentage
II. The total value of the purchase
III. The loyalty-discount amount
IV. The customer ID card number
V. The amount payable after discount
A) I, II, and III
B) I and III
C) II, IV, and V
D) II and IV

Accepted Answer

The program requires the total value of the purchase (II) to calculate the 8 percent discount and the customer ID card number (IV) to determine if the loyalty discount applies.

Question 9

A Java virtual machine is:
A) Software
B) Hardware
C) Firmware
D) Applet

Accepted Answer

The answer of A Java virtual machine is:
A) Software
B) Hardware
C)...

Question 10

What is the output of the following code snippet?
System.out.print("Hello");
System.out.println("Good Day!");
A)Hello Good Day!
B)Hello 
Good Day!
C) HelloGood Day!
D) HelloGoodDay!

Accepted Answer

The answer of What is the output of the following...

Question 11

In order for Java to achieve portability
A) compiled Java programs contain instructions for a virtual machine
B) Java is not compiled
C) Java programs must be re-compiled on each platform where they are to run
D) Java programs are based on the C++ programming language

Accepted Answer

Compiled Java programs contain instructions for a virtual machine called the Java Virtual Machine (JVM). This allows the same compiled code to run on any platform that has a compatible JVM installed, achieving portability.

Question 12

The ENIAC computer burned out transistors at the rate of
A) ten per day
B) one hundred per day
C) several per day
D) None - it used vacuum tubes

Accepted Answer

The answer of The ENIAC computer burned out transistors at...

Question 13

Which option correctly completes this statement? Programs can repeat simple instructions very quickly to
I. help human users to perceive images and sound
II. remove the drudgery of repeating instructions by hand
III. overcome the need for connectivity to the computer network
A) I, II only
B) I, III only
C) II, III only
D) I, II, III

Accepted Answer

Programs can repeat instructions quickly to help users perceive images and sound (I) and to automate repetitive tasks (II). Connectivity (III) is unrelated to repetition of instructions.

Question 14

Consider the following pseudocode, what does it produce?
Set n = 1.
Set p = 0.
Set s = 0.
Repeat until n equals 10
Calculate the square of n and store in s.
Add s to p.
Add 1 to n.
Print p.
A) The product of first 10 even numbers
B) Two raised to the power 10
C) The product of first 10 numbers
D) Sum of square of numbers between 1 and 10

Accepted Answer

The pseudocode calculates the square of each number between 1 and 10, adds them together, and prints the total sum. This means it produces the sum of the squares of the numbers between 1 and 10.

Question 15

Consider the following pseudocode, what does it produce?
Set n = 1.
Set p = 1.
Repeat until n equals 6
Multiply p by n and store result in p.
Add 1 to n.
Print p.
A) 1 2 6 24 120 720
B) 1 1 2 3 5 8
C) 1 2 3 4 5 6
D) 1 3 6 9 12 15

Accepted Answer

The pseudocode starts with n and p both equal to 1. It then enters a loop that multiplies p by n and stores the result in p, before incrementing n by 1. This loop repeats until n equals 6. Therefore, the output will be 1, 2, 6, 24, 120, and 720, which corresponds to choice A.

Question 16

The Java statement public static void main(String[] args) declares a:
A) class
B) variable
C) constant
D) method

Accepted Answer

The statement "public static void main(String[] args)" is the declaration of the main method in a Java program. It is the entry point of a Java program and is responsible for starting the execution of the program. It is a special method, and its declaration must have this exact signature. Therefore, option D is the correct answer.

Question 17

Writing a computer game in Java that has graphics, motion, and sound effects
A) is simple because of the power of Java
B) requires a team of skilled programmers
C) cannot be done in the Java programming language
D) is more mundane than most programs

Accepted Answer

Creating a computer game with graphics, motion, and sound effects is a complex task that typically requires a team of skilled programmers to handle the various aspects such as game design, graphics rendering, physics, and audio integration.

Question 18

Consider the following pseudocode. What does it produce?
Set n = 1.
Set p = 1.
Repeat until n equals 20
Multiply p by 2 and store result in p.
Add 1 to n.
Print p.
A) The product of first 20 even numbers
B) Two raised to the power 20
C) The product of first 20 numbers
D) Factorial of 20

Accepted Answer

The pseudocode multiplies p by 2 in each iteration, which is equivalent to raising 2 to the power of n. Thus, the output will be 2^20.

Question 19

Consider the following pseudocode. What does it produce?
Create a list of consecutive integers from two to n: (2, 3, 4, ..., n).
Initially, let p equal 2.
Repeat following steps until p2 is greater than n
Strike from the list all multiples of p less than or equal to n.
Find the first number remaining on the list greater than p.
Replace p with this number.
A) All even numbers up to n
B) All Fibonacci numbers up to n
C) All prime numbers up to n
D) All factorial numbers up to n

Accepted Answer

This pseudocode implements the sieve of Eratosthenes, which is a well-known algorithm for finding all prime numbers up to a given limit. The algorithm starts by creating a list of consecutive integers from 2 to n. Then, it repeatedly strikes out all multiples of the current prime number p (starting with 2) until p^2 exceeds n. After that, it replaces p with the next number on the list that is greater than p and has not been struck out. This process continues until all primes up to n have been found. Therefore, the correct choice is C, which corresponds to "All prime numbers up to n".

Question 20

Evaluate the pseudocode below to calculate the payment (pmt) with the following test values:
The total number of hours worked (workingHours) = 60
The rate paid for hourly work (rate) = 15
Input workingHours
Input rate
Pmt = workingHours * rate
If workingHours > 40 then
ExtraHours = workingHours - 40
ExtraPmt = extraHours * rate * 2
Pmt = pmt + extraPmt
Output pmt
A) 900
B) 1,200
C) 1,500
D) 1,800

Accepted Answer

The answer of Evaluate the pseudocode below to calculate the...

Quiz 1: Introduction

What is the output of the following code snippet?

In order to translate a Java program to a class file, the computer needs to have software called a(n) :

The language developed by Sun Microsystems that became the Java programming language was originally designed to be simple, secure, and

In order to run Java programs on a computer, the computer needs to have software called a(n) :

Which one of the following code snippets compiles without errors and displays the output "Hello Good Day!" on the screen?

Java is said to be a "safe" programming language. What does this mean?

Consider the following pseudocode, what does it produce? Set n = 0. Set a = 0. Set b = 1. Set p = 1. Print p. Repeat until n equals 10 Set p = a + b. Set a = b. Set b = p. Add 1 to n. Print p.

A Java virtual machine is:

What is the output of the following code snippet? System.out.print("Hello") ; System.out.println("Good Day!") ;

In order for Java to achieve portability

The ENIAC computer burned out transistors at the rate of

Which option correctly completes this statement? Programs can repeat simple instructions very quickly to I. help human users to perceive images and sound II. remove the drudgery of repeating instructions by hand III. overcome the need for connectivity to the computer network

Consider the following pseudocode, what does it produce? Set n = 1. Set p = 0. Set s = 0. Repeat until n equals 10 Calculate the square of n and store in s. Add s to p. Add 1 to n. Print p.

Consider the following pseudocode, what does it produce? Set n = 1. Set p = 1. Repeat until n equals 6 Multiply p by n and store result in p. Add 1 to n. Print p.

The Java statement public static void main(String[] args) declares a:

Writing a computer game in Java that has graphics, motion, and sound effects

Consider the following pseudocode. What does it produce? Set n = 1. Set p = 1. Repeat until n equals 20 Multiply p by 2 and store result in p. Add 1 to n. Print p.