Which two functions are performed at the MAC sublayer of the OSI data link layer? (Choose two.)

Which two functions are performed at the MAC sublayer of the OSI data link layer? (Choose two.)

  • Provides a mechanism to allow multiple devices to communicate over a shared medium.
  • Controls the NIC responsible for sending and receiving data on the physical medium.
  • Places information in the frame that identifies which network layer protocol is being used for the frame.
  • Adds Layer 2 control information to network protocol data.
  • Communicates between the networking software at the upper layers and the device hardware at the lower layers.

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