What is a function of the MAC sublayer? (Choose three.)
- controls access to the media
- checks for errors in received bits
- uses CSMA/CD or CSMA/CA to support Ethernet technology
- communicates between software at the upper layers and the device hardware at the lower layers
- allows multiple Layer 3 protocols to use the same network interface and media
Explanation: The MAC sublayer checks for bit errors, supports Ethernet technologies, and controls access to the media.
Exam with this question: 7.1.5 Check Your Understanding - Ethernet Switching
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