Question: Why does UDP exist? Would it not have been enough to just let user processes send raw IP packets?The first piece of code contains a

Why does UDP exist? Would it not have been enough to just let user processes send raw IP packets?The first piece of code contains a server program that provides a service to a certain application, what is it

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Describe the code by adding comments to each line?The second piece of code contains a protocol that allows unidirectional data flow over an unreliable channel, which Protocol is that? Describe the code by adding comments to each line?

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