Answer:
Transport layer
Explanation:
The transport layer is responsible for maintaining end to end communication between devices connected on a network.
The TCP/IP determines how data is exchanged between devices connected on a network by providing end to end communications that determines how it should be broken into packets.
Four binary digits. So letter D.
Precision, specificity is related to the accuracy of the information with respect to the subject at hand. Precision is the only answer that makes sense.
