APCSP Boolean Logic 3

Question 1

What does the XOR (exclusive OR) operator return?

Accepted Answer

TRUE when exactly one input is TRUE

Answer

TRUE when both inputs are TRUE

Answer

TRUE when both inputs are FALSE

Answer

TRUE when at least one input is TRUE

Question 2

According to De Morgan's first law, NOT(A AND B) is equivalent to:

Accepted Answer

NOT(A) OR NOT(B)

Answer

NOT(A) AND NOT(B)

Answer

A OR B

Answer

A AND B

Question 3

Which expression is equivalent to NOT(A OR B) by De Morgan's second law?

Accepted Answer

NOT(A) AND NOT(B)

Answer

NOT(A) OR NOT(B)

Answer

A AND B

Answer

A OR B

Question 4

Why are Boolean conditions used in if-statements in programming?

Accepted Answer

To determine which branch of code to execute

Answer

To perform mathematical calculations

Answer

To store data in variables

Answer

To create repetition in loops

Question 5

A spam filter marks email as spam if: (has_suspicious_link OR from_unknown_sender) AND NOT(in_whitelist). When is email NOT marked as spam?

Accepted Answer

When the sender is in the whitelist

Answer

When it has a suspicious link

Answer

When the sender is unknown

Answer

When it has no suspicious links but the sender is unknown

Question 6

How many rows are needed in a truth table for a Boolean expression with two inputs?

Accepted Answer

4

Answer

2

Answer

3

Answer

8

Question 7

Boolean logic is fundamental to computing primarily because computers internally represent all data as:

Accepted Answer

Binary digits (0 and 1)

Answer

Decimal numbers (0-9)

Answer

Letters and symbols

Answer

Hexadecimal values