What is one main characteristic of the data link layer?

Mar 13, 2020 Last Updated: Jul 1, 2020 No Comments

IT Questions Bank › What is one main characteristic of the data link layer?

Question:
What is one main characteristic of the data link layer?

It generates the electrical or optical signals that represent the 1 and 0 on the media.
It converts a stream of data bits into a predefined code.
It shields the upper layer protocol from being aware of the physical medium to be used in the communication.
It accepts Layer 3 packets and decides the path by which to forward the packet to a remote network.