What gate is described by this truth table? A B Output 1 1 0 1 0 1 0 1 1 0 0 0

The output is 1 when the two inputs are different: 1 and 0, or 0 and 1. It is 0 when the inputs are the same: 1 and 1, or 0 and 0. This is the behavior of an XOR gate, so the correct choice is XOR.

AI-written and checked against the verified answer.