CASE STUDY
OSI Reference Model:
Read the text below, then answer the questions that follow.
OSI (Open Systems Interconnect) refers to computer network architecture structured into layers.
The physical layer is concerned the transfer of electrical signals. The physical layer of a school network can be shown in a diagram of the network hardware
The data link layer is concerned with the rules of data exchange. A student logging on to the school network does so via a username and a password.
