Question: Which of the following is the correct symbol for an Ex-NOR gate?

Options:

1. A standard AND gate symbol
2. A standard OR gate symbol
3. An Ex-OR gate symbol with a circle at the output
4. A NOT gate symbol

Correct Answer: An Ex-OR gate symbol with a circle at the output

Solution:

The Ex-NOR gate is represented by an Ex-OR gate symbol with a circle at the output, indicating negation.