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Why Do We Need Protocols?

Protocol in computers is as a formal description of message formats and the rules two or more machines must follow to exchange those messages. Computers need protocols in order to avoid conflicts of data exchange and also for authentication.
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Why Are Network Protocols Needed?
Definition Network protocols are sets of rules for exchanging information. This exchange usually occurs much like a dialog between two computers. The exchange often begins with the client sending a signal to the server, providing key information  www.ehow.com
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Routing protocol is used to dynamically learn routing information so routers know where to send packets. The only other option is to manually define all routers within a network which would be very impractical.  wiki.answers.com
Why do we need accountants?
I can't speak for why others might need an accountant, but here are some reasons why I need one: I need someone who is appropriately qualified to spend the time to understand an. interpret the 70,000 pages of tax law. and then apply it to my  www.quora.com
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