3. Answer the following questions that deal with ARQ protocols. (a) A Stop-And-Wait ARQ protocol is running over a noise-free link where the packet size is 1000 bits, the link propagation delay is 25sec and the channel transmission rate is 100Mbps. Ignore the overheads due to packet headers, ACK transmission times and processing delays. Is this ARQ protocol a good choice for this link? Explain your answer in detail. (b) If you were to use Go-Back-N or Selective-Repeat ARQ instead, what value would you choose for the sender window size? Make the same system assumptions as in Part 3a