Exercise 1 of CSE 677(7.5 points, type print, hard-copy, <500words answer to each question)

Question 1 (3 points) Describe why an application developer may

choose to run an application over UDP rather than TCP.

Question 2 (4.5 points) Design a reliable transfer protocol that uses

only negative acknowledgement. How quickly will your protocol respond to lost packets when the arrival rate of data to the sender is low? And when it is high?