Question

Transport Protocols

An organization has many satellite offices with Internet connections slower than the typical data speeds available on the market. The organization also employs many people that work from home. The organization has developed a streaming application that allows employees to watch videos, such as training videos, new product videos, meeting recordings, etc., that are posted by other employees. The application was written to use the TCP transport protocol.

The employees complain that the videos often stall and buffer while they are watching them. Sometimes the stalls are short, and sometimes they stall for longer periods of time. Eventually they can watch through the entire video, if they persist, but the stalls make the videos difficult to watch.

The project manager is considering what could be done to remedy these issues. Answer the following questions to help the project manager decide.

1. What might be causing the application to exhibit the stalls the employees complain about?
2. Would switching the application to UDP protocol reduce or eliminate these stalls? Explain your answer.
3. Would switching the application to UDP introduce problems that would not occur if the application stayed with TCP? Identify the problems, explain what they are, and tie them in to this scenario.
4. What inherent benefits might UDP have over TCP in relation to this video streaming scenario?
5. With this information in mind, would you recommend to the project manager that the application switch to UDP? Explain your reasoning.

Answer 1

a)

b)

c)

d)

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