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Understanding the Network: A Practical Guide to Internetworking by Martin J. Michael

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Network Communication Protocols

Transmission protocols are used to send information across the transmission media. Network protocols are used to format and deliver information between computers or hosts.

Think of a transmission protocol as your voice; you expel air from your diaphragm and across the larynx to make sound. That sound is carried across a room as a sound wave. It reaches someone's ear, and the tympanic nerves and bones translate the sound waves into nervous impulses that are interpreted by your brain. This sequence is much like the way electrical signals are sent across a network cable.

Network protocols are similar to language. Language provides the rules and means of expression that allow us to transport our ideas to others. Also, ...

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