Question: Which of the following is a characteristic of a D flip-flop?

Options:

1. It has two inputs: D and CLK
2. It can only store one bit of data
3. It changes state on the rising edge of the clock signal
4. All of the above

Correct Answer: All of the above

Solution:

A D flip-flop has a data input (D) and a clock input (CLK), can store one bit, and changes state on the clock\'s rising edge.