Question 1

Which of the following is not a logical operator?

Accepted Answer

A)  ! 
B)  || 
C)  != 
D)  &&

Question 2

=! is a relational operator.

Accepted Answer

A) True 
 B)False

Question 3

If str1 is "Hello" and str2 is "Hi", which of the following could not be a result of str1.compareTo(str2);?

Accepted Answer

A)  -9 
B)  -5 
C)  -1 
D)  1

Question 4

The symbol >= is a logical operator.

Accepted Answer

A) True 
 B)False

Question 5

A program uses selection to implement a branch.

Accepted Answer

A) True 
 B)False

Question 6

What does >= mean?

Accepted Answer

A)  less than 
B)  greater than 
C)  less than or equal to 
D)  greater than or equal to

Question 7

int x, y;if (x 4)
{
If (x > 7)
Y = 4;
Else
Y = 6;
}
Else
Y = 8;Based on the code above, what is the value of y if x = 9?

Accepted Answer

A)  2 
B)  4 
C)  6 
D)  8

Question 8

int x;
X = (1 'K' >= 'F') ? 5 : 12Based on the code above, what is the value of x?

Accepted Answer

A)  1 
B)  3 
C)  5 
D)  12

Question 9

Including a semicolon before the action statement in a one-way selection causes a syntax error.

Accepted Answer

A) True 
 B)False

Question 10

int x, y;if (x 4)
{
If (x > 7)
Y = 4;
Else
Y = 6;
}
Else
Y = 8;Based on the code above, what is the value of y if x = 4?

Accepted Answer

A)  2 
B)  4 
C)  6 
D)  8

Question 11

'A' = 7 || 4 Based on the code above, which part of the expression is not evaluated?

Accepted Answer

A)  2.5 >= 7 
B)  4 
C)  2.5 >= 7 || 4

Question 12

The expression !(x is true only if x is a positive number.

Accepted Answer

A) True 
 B)False

Question 13

The conditional operator ?: takes ____ arguments.

Accepted Answer

A)  two 
B)  three 
C)  four 
D)  five

Question 14

int x, y;if (x 4)
{
If (x > 7)
Y = 4;
Else
Y = 6;
}
Else
Y = 8;Based on the code above, what is the value of y if x = 1?

Accepted Answer

A)  2 
B)  4 
C)  6 
D)  8

Question 15

Which of the following will cause a syntax error, if you are trying to compare x to 5?

Accepted Answer

A)  if (x == 5) 
B)  if (x = 5) 
C)  if (x= 5)

Question 16

The operators = and == have the same order of precedence.

Accepted Answer

A) True 
 B)False

Question 17

What is the output of the following Java code?int x = 0;
If (x > 0)
System.out.println("positive ");
System.out.println("zero ");
System.out.println("negative");

Accepted Answer

A)  zero 
B)  negative 
C)  zero negative 
D)  positive zero negative

Question 18

Suppose P and Q are logical expressions. The logical expression P && Q is false if both P and Q are false.

Accepted Answer

A) True 
 B)False

Question 19

The expression 'A' 'B' evaluates to false while the expression 'A' 'B' evaluates to true.

Accepted Answer

A) True 
 B)False

Question 20

The method compareTo is part of the class String.

Accepted Answer

A) True 
 B)False

Exam 4: Control Structures I: Selection

Which of the following is not a logical operator?

=! is a relational operator.

If str1 is "Hello" and str2 is "Hi", which of the following could not be a result of str1.compareTo(str2) ;?

The symbol >= is a logical operator.

A program uses selection to implement a branch.

What does >= mean?

int x, y;if (x 4) { If (x > 7) Y = 4; Else Y = 6; } Else Y = 8;Based on the code above, what is the value of y if x = 9?

int x; X = (1 'K' >= 'F') ? 5 : 12Based on the code above, what is the value of x?

Including a semicolon before the action statement in a one-way selection causes a syntax error.

int x, y;if (x 4) { If (x > 7) Y = 4; Else Y = 6; } Else Y = 8;Based on the code above, what is the value of y if x = 4?

'A' = 7 || 4 Based on the code above, which part of the expression is not evaluated?

The expression !(x is true only if x is a positive number.

The conditional operator ?: takes ____ arguments.

int x, y;if (x 4) { If (x > 7) Y = 4; Else Y = 6; } Else Y = 8;Based on the code above, what is the value of y if x = 1?

Which of the following will cause a syntax error, if you are trying to compare x to 5?

The operators = and == have the same order of precedence.

What is the output of the following Java code?int x = 0; If (x > 0) System.out.println("positive ") ; System.out.println("zero ") ; System.out.println("negative") ;

Suppose P and Q are logical expressions. The logical expression P && Q is false if both P and Q are false.

The expression 'A' 'B' evaluates to false while the expression 'A' 'B' evaluates to true.

The method compareTo is part of the class String.