Consider a scenario where device A wants to send packets to devices B and C sequentially. A device is connected to B and C with a separate line (link). Design a stop and wait type error checking protocol to send packets from A to B and C. In this protocol, A will first send a packet to B, and after making sure that the packet has been received by B, it will send it to C. A should not receive new data from a higher layer without knowing that the packet it sent was received correctly by B and C. a) Draw the FSM of A. b) Explain how the protocol you have designed recovers a lost packet by drawing an example (actions of the sender and receiver on the timeline).

i know this question already asked by someone else but i need different protocol so it won't be the same.