Multiple Choice
Identify the letter of the choice that best
completes the statement or answers the question.
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1.
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If the operator AND is used, which of the following will make the whole
condition true?
a. | first operand true, second operand false | c. | both operands
true | b. | first operand false, second operand true | d. | both operands
false |
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2.
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The condition specified for an if or an if-else statement must be a(n)
_________________ expression.
a. | Boolean | c. | relational | b. | arithmetic | d. | assignment |
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3.
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For which of the following values of x and y is the expression
(x>3) || (y<=5) FALSE?
a. | x=3, y=6 | c. | x=7, y=2 | b. | x=5 y=4 | d. | x=1, y=5 |
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4.
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Of Java's three logical operators, which comes first in the order of
operations?
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5.
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Which of the following statements contain a syntax
error? Assume: int X, Y, Z;
I. if X>3
{System.out.println(“Hello”);}
II. if(Z=Y)
System.out.println(“How are you?”);
III. if(X>3)
System.out.println(“Just fine.”)
else
System.out.println(“And yourself?”);
a. | I and II | b. | I and III | c. | II and
III | d. | I, II and III | e. | none |
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6.
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What is the value of y after the following if the value of x is
5?
if (x<5){y=2*x+1;} else {y=2*x;}
if (y%2==0) {y=y+3;}
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7.
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Checking to see that an input value is appropriate is called ___________
checking.
a. | error | b. | range | c. | domain | d. | region |
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8.
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Which value of x would cause the computer to
“short-circuit”on the following OR expression?
X<5 || X>7
a. | x = 4 | b. | X =
5 | c. | X = 6 | d. | X =
7 | e. | X = 8 |
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9.
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The Boolean expression !(E
&& F) is equivalent to.
a. | E ||
F | b. | !E ||
!F | c. | E &&
F | d. | !E &&
!F | e. | !(E ||
F) |
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10.
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If X, Y and Z are Boolean variables, which of the
following evaluates to FALSE? Assume that X=true, Y=false and Z=false.
a. | (X || Z) &&
!Y | b. | !(X && Z) ||
Y | c. | X || Z && ! Y ||
Z | d. | !(X || Z && Y &&
X) | e. | Y && Z || !Y &&
X |
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