1. Which TCP/IP protocol layer is responsible for the following functions: !interfacing with the user 2.defining electrical and mechanical properties of an interface unique global addressing for an interface 3.identifying a running process on an end system governing the sharing of a shared medium 4.point to point addressing, i.e. addressing for interfaces that are adjacent in an end-to-end path In your answer, just write down the layer excluding the word layer, e-g. session, instead of session layer 2.At what layer of the TCP/I protocol stack do each of the following operate? router switch host process