Logical Operations

Which statement best describes the AND logical operation?

• It returns TRUE if at least one input is TRUE.

• It returns TRUE only if all inputs are TRUE.

• It returns FALSE if one input is FALSE.

• It returns FALSE only if all inputs are FALSE.

Which of the following represents the truth table of the OR operation?

• Only one input needs to be TRUE for the output to be TRUE.

• Both inputs need to be TRUE for the output to be TRUE.

• The output is TRUE only when both inputs are FALSE.

• The output is always FALSE unless both inputs are TRUE.

The Boolean expression A AND B is only TRUE when:

• A is FALSE and B is TRUE

• A is TRUE and B is FALSE

• Both A and B are TRUE

• Both A and B are FALSE

The Boolean expression A OR B is FALSE only when:

• A is TRUE and B is FALSE

• A is FALSE and B is TRUE

• Both A and B are TRUE

• Both A and B are FALSE

Which logic gate is associated with the AND operation?

• XOR

• NOT

• NAND

• AND

A security system is designed to activate an alarm only when both motion is detected AND a window is open. What logical operation is being used?

• AND

• OR

• NOT

• XOR

A website requires a user to log in using either an email or username, along with the correct password. What logical operation is used to check the email/username condition?

• AND

• OR

• NOT

• XOR

A light switch in a room is controlled by two buttons. The light turns ON when either switch is pressed. What logical operation is this?

• AND

• OR

• NOT

• NOR

A factory conveyor belt system will only move if both the emergency stop is OFF and the start button is ON. What logical operation controls this system?

• AND

• OR

• XOR

• NOR

A student is allowed to join a robotics club if they are in Grade 9 OR have prior robotics experience. What logical operation determines their eligibility?

• AND

• OR

• NOT

• XOR