AP CSA Unit 3 Review

Front

What does short circuit evaluation mean in the following code? if (a < b && c != d)

Back

if a < b is false it doesn't evaluate c != d

Front

The boolean expression (A || B) && A is true whenever?

Back

A is true

Front

The boolean expression (A && B) && B is true whenever...

Back

both A is true and B is true

Front

For what values of n with this code segment generate output? Options: for all values of n, for all even values of n, for all values of n that are multiples of 3, for all values of n that are multiples of 6, for all values of n that are either a multiple of 2 or a multiple of 3.

Back

for all values of n that are multiples of 6

Front

Which java statement correctly implements the following pseudocode: display "A" when the student's grade is higher than 90 (inclusive)

Back

if (studentGrade >= 90)

Front

Consider the following code, assuming grade is an int: Which of the following will always produce the same result as the code above, regardless of the value of grade?

Back

Front

What is output by the following code? Options: 11, 31, 15, error

Back

11

Front

Consider the following incomplete code segment. Consider the following potential replacements for /* missing code */. Which of these replacements will cause the code segment to always print false? Assume that Math is imported correctly into our program: (int)(Math.random() * 10) + 20, (int)(Math.random() * 10) + 25, (int)(Math.random() * 10) + 30, (int)(Math.random() + 30)

Back

(int)(Math.random() * 10) + 20

Front

Which condition should be used to test whether the contents of two strings referenced by string1 and string2 have the same value? Options: (string1.equals(string2)), (String.equals(string1, string2)), (string1 == string2), (Equals(string1, string2))

Back

(string1.equals(string2))

Front

Which choice denotes an empty string? Options: empty, "" , nil, null

Back

""