שאלה | What role do acknowledgments (ACKs) and negative acknowledgments (NAKs) play in rdt2.0?

What role do acknowledgments (ACKs) and negative acknowledgments (NAKs) play in rdt2.0?

		ACKs inform the sender that the packet was received without errors, while NAKs indicate that errors were detected and the packet needs to be retransmitted
		ACKs and NAKs are used interchangeably to acknowledge receipt of packets
		ACKs and NAKs are used for encryption and decryption of transmitted data
		ACKs and NAKs are used to establish and terminate connections between sender and receiver