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CIS043 Quiz and Solutions

CIS043 Quiz Chapter 2 Solutions

Question 1

1 / 1 pts

End-of-line comments that should be ignored by the compiler are denoted using

  

a.) Two forward slashes ( // ).Correct Answer

  

b.) Three forward slashes ( /// ).

  

c.) A slash and a star ( /* ).

  

d.) A slash and two stars (/** ).

Question 2

1 / 1 pts

Which of the following is not a valid Java identifier?

  

a.) my Variable Correct Answer

  

b.) $_Value

  

c.) widthValue

  

d.) my_variable

 

Question 3

1 / 1 pts

Which of the following cannot cause a syntax error to be reported by the Java compiler?

  

a.) Mismatched {}

 

  

b.) Missing */ in a comment that begins with /*

  

c.) Missing ;

  

d.) Extra blank lines.Correct Answer

 

Question 4

1 / 1 pts

Which of the following is not a syntax error?

  

a.) System.out.println( 'Hello world!' ):

  

b.) System.out.println( "Hello 
                     world!" );

  

c.) System.out.println( "Hello world!" );Correct Answer

  

d.) System.out.println( Hello world! );

Question 5

1 / 1 pts

Which command compiles the Java source code file Welcome.java?

  

a.) cd Welcome.java

  

b.) javac Welcome.java Correct Answer

  

c.) java Welcome.java

  

d.) compile Welcome.java

Question 6

1 / 1 pts

Which command executes the Java class file Welcome.class?

  

a.) javac Welcome.class

  

b.) java Welcome.class Correct Answer

  

c.) java Welcome

  

d.) run Welcome.class

Question 7

1 / 1 pts

Which is the output of the following statements?
     System.out.print("Hello ");

     System.out.print("World");

  

a.) Hello World Correct Answer

  

b.) HelloWorld

  

c.) Hello
World

  

d.) World
Hello

Question 8

1 / 1 pts

Which of the following characters is the escape character?

  

a.) *

  

b.) \ Correct Answer

  

c.) \n

  

d.) "

Question 9

1 / 1 pts

Which of the following statements will print a single line containing "hello there"?

  

a.) System.out.println( "hello" );
     System.out.println( " there" ); 

  

b.) System.out.println( "hello" , " there" ); 

  

c.) System.out.println( "hello" );
     System.out.print( " there" ); 

  

d.) System.out.print( "hello" ); Correct Answer
     System.out.println( " there" ); 

Question 10

1 / 1 pts

When method printf requires multiple arguments, the arguments are separated with ________.

  

a.) colons (:)

  

b.) semicolons (;)

  

c.) commas (,) Correct Answer

  

d.) periods (.)

Question 11

1 / 1 pts

Which of the following statement displays Hello World?

  

a.) System.out.printf( "%2s", "Hello " "World" );

  

b.) System.out.printf( "%s %s", "Hello", "World" ); Correct Answer

  

c.) System.out.printf( "%s%s", "Hello, World" );

  

d.) System.out.printf( "s% s%", "Hello", "World" );

Question 12

1 / 1 pts

All import declarations must be placed

  

a.) inside the class declaration's body.

  

b.) before the class declaration. Correct Answer

  

c.) after the class declaration.

  

d.) all of these will work.

Question 13

1 / 1 pts

Which of the following is a variable declaration statement?

  

a.) int total; Correct Answer

  

b.) import java.util.Scanner;

  

c.) public static void main( String args[] )

  

d.) // first string entered by user

Question 14

1 / 1 pts

A(n) ________ enables a program to read data from the user.

  

a.) printf

  

c.) import declaration

  

b.) Scanner Correct Answer

  

d.) main

Question 15

1 / 1 pts

Which of the following is not a Java primitive type?

  

a.) char

  

b.) byte Correct Answer

  

c.) real

  

d.) double

Question 16

1 / 1 pts

The format specifier ________ is a place-holder for an int value?

  

a.) %a

  

b.) %d Correct Answer

  

c.) %int

  

d.) %s

Question 17

1 / 1 pts

What is the value of result after the following Java statements execute?
int a, b, c, d, result;
a = 4;
b = 12;
c = 38;
d = 51;
result = d % a * c/4 + (a/b - d/2); 

  

a.) 7

  

b.) 53

  

c.) 2

  

d.) 3 Correct Answer

Question 18

1 / 1 pts

Which of the following is not an arithmetic operator?

  

a.) +

  

b.) - Correct Answer

  

c.) .

  

d.) %

Question 19

1 / 1 pts

What will be output after the following Java statements have been executed?
int a, b, c, d;
a = 4;
b = 12;
c = 37;
d = 51;

if ( a < b )

           System.out.println( "a < b" );

if ( a > b )

           System.out.println( "a > b" );

if ( d <= c )

           System.out.println( "d <= c" );

if ( c!= d )

           System.out.println( "c != d" );

  

a.)  a < b Correct Answer
      c != d

  

b.)  a < b
     d <= c 
     c != d 

  

c.) a > b 
     c != d

  

d.) a < b
     c < d 
     a != b

Question 20

1 / 1 pts

Each of the following is a relational or equality operator except:

  

a.) <=

  

b.) =! Correct Answer

  

c.) ==

  

d.) >