Describe the open systems interconnection (OSI) protocol model.

Write a 3- to 5-page paper in which you do the following:
Describe the Open Systems Interconnection (OSI) protocol model.
Identify the advantages and disadvantages of circuit switching and packet switching—X.25, Frame Relay, Asynchronous Transfer Mode2, and Transmission Control Protocol/Internet Protocol (TCP/IP)—regarding performance, speed and throughput potential, and end-to-end transmission reliability and predictability.
Identify major protocols for circuit switching and packet switching.

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