C codes for two questions and packet tracer

Even if you can do two of three questions posted can also bid. Implement Selective Repeat ARQ for the scenario in C language (basic code that gives the output) (i) For m=3,Calculate the Sender Window Size and Receiver Window Size (ii) Assume that sender wants to transmit 30 frames. (iii) Within each timeout period, 4 frames can be transmitted. (iv) Assume that Frame 19 and 15 are lost during the transmission. (v) Acknowledgement for frame9 and 20 is lost. Implement Classless Addressing Using C Packet tracer List out the steps in packet tracer for the following scenario (i) For creating various network topologies (ii) For analysing the performance of routing protocols Each topology should be created in packet tracer and screen shots should be taken and you should make a word doc from that.