|  | 6.5 | Media Access Control (MAC)
| 6.5.1 | Definition of MAC

Media Access Control (MAC) refers to protocols that determine which computer on a shared-medium environment (collision domain) is allowed to transmit the data. MAC, with LLC, comprises the IEEE version of Layer 2. MAC and LLC are both sublayers of Layer 2. There are two broad categories of Media Access Control: deterministic (taking turns); and non-deterministic (first come, first served).

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