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.

Solution: the categorization of functional and non-functional requirement are as follows: some of the more typical functional requirements include: • business rules• transaction corrections, adjustments and cancellations• administrative functions• authentication• authorization levels• audit tracking• external interfaces• certification requirements• reporting requirements• historical data• legal or regulatory requirementswhile,some typical non-functional requirements are: • performance – for example response time, throughput, utilization, static volumetric• scalability• capacity• availability• reliability• recoverability• maintainability• serviceability• security• regulatory• manageability• environmental• data integrity• usability• interoperability

You need to call the office. and then you need to give them a reason on why you want to change your username.