In this problem, we will use a widely-used program, "ping". You may want to read about it if you are not already familiar with it (e. g., type "man ping" in google ).
a. Describe briefly the function of "ping".
b. Try using "ping" on your computer. Specifically, use 5 probes, each probe of 40 bytes, to obtain 5 samples of round-trip times from the machine you are using to a destination machine that you choose (e. g., www. cnn). List the command you use and the results you get.
c. Calculate the mean and the standard deviation of the round-trip times.