Exam APCS A BooleanModulus 2024

Front

What is the default value of a boolean data type in Java? Options: `true`, `false`, `0`, `null`

Back

`false`

Front

Which of the following is a logical operator in Java? `+`, `&&`, `=`, `++`

Back

`&&`

Front

Consider the following code snippet: `boolean result = (5 > 3) && (8 < 10);`. What is the value of `result`?

Back

`true`

Front

Which of the following statements correctly uses a conditional statement with a boolean expression in Java?
Options: `if (x = 5) { }`, `if (x == 5) { }`, `if (x : 5) { }`, `if (x => 5) { }`

Back

`if (x == 5) { }`

Front

Evaluate the following expression: `true || false && false`. What is the result?

Back

`true`

Front

What is short-circuit evaluation in Java?

Back

Stopping evaluation as soon as the result is determined

Front

Given the expression `false && (5 / 0 > 1)`, what will be the result and why?

Back

`false`, because short-circuit evaluation prevents division by zero

Front

Construct a truth table for the logical AND operator. What is the result when both operands are `true`?

Back

`true`

Front

Which of the following boolean expressions is syntactically correct in Java? Options: `boolean x = (5 > 3)`, `boolean x = 5 > 3`, `boolean x = 5 < 3`, `All of the above`

Back

All of the above

Front

Analyze the following code: `boolean x = true; boolean y = false; boolean z = x || y && !x;`. What is the value of `z`?

Back

`true`