23: Consider the figure shown below for a Stop-and-Wait ARQ communication and answer the following questions: a)- Explain the concept of CRC codes and give an example from the figure: b)- Explain the concept of sequence numbers and give an example from the figure? C)- Explain the concept of acknowledgement numbers and give an example from the figure? d)- Explain the concept of timeout timers and give an example from the figure? e)- Explain the concept of piggybacking and give an example from the figure? Sencer Receiver A B Start Frame o Request 1:0:10:1 S. Arrival 10;1;015 RA 01:01: Arrival Stop ACK 1 So Request 101 Frame 7 Lost Time-out restart Time-out :o 01:01 Frame 1 (resent) 0:1 RO 1:01 Arrival Stop ACKO Start Arrival 01:01 Request 101 Framne o R 10:10 Arrival So ACK Lost Time-out restart Time-out 01 R. 1:01 Frame O fresent) S 0770i Arrival Discard, duplicate ACK Stop Arrival 10:10 ofit 10 Time Time