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Explain and provide example when it is possible that will cover chapter 4 subjects: – Media Access Control• Controlled Access•                         Contention Access–                  ErrorControl•                                Prevention•                                     Detection•                                     Correction–                                      Protocols•                                            Async•                                                   SDLC•                                                Ethernet•                                                 PPP–Transmission Efficiency and Throughput Additionals resources https://www.csus.edu/indiv/m/millerd/Ch4%20Ed7%20Notes.ppt