Chapter 6 The Link Layer and LANs
Two fundamentally different types of link-layer channels: broadcast channel It connect multiple hosts in wireless LANs, in satellite networks, and in hybrid fiber-coaxial cable (HFC) access networks. It needs medium access protocol to coordinate frame transmission. point-to-point communication link Coordinating access to a point-to-point link is simpler. It is used in settings ranging from dial-up service over a telephone line to high-speed point-to-point frame transport over fiber-optic...
