Question: 5 . Consider the following multiple access protocols that we've studied: ( 1 ) TDMA, and FDMA ( 2 ) CSMA ( 3 ) Aloha,

5. Consider the following multiple access protocols that we've studied: (1) TDMA, and FDMA (2) CSMA (3) Aloha, and (4) polling. Which of these protocols requires some form of centralized control to mediate channel access?

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