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.)

  • Implements a trailer to detect transmission errors.
  • Provides synchronization between source and target nodes.
  • Places information in the frame that identifies which network layer protocol is being used for the frame.
  • Enables IPv4 and IPv6 to utilize the same network interface and media.
  • Adds Layer 2 control information to network protocol data.

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