Nomenclature of monitoring system-full duplex, half duplex

Full-duplex: It can be sent and received at the same time. Full-duplex requirements: Separate channels for receiving and sending, which can be used to realize communication between two stations and star network, ring network, not for bus network.

Half-duplex: It is impossible to send and receive at the same time, and sending and receiving are time-divisional. Half-duplex requirements: Transceivers can share the same channel, and local area networks that can be used in various topologies are most commonly used in bus networks. Half-duplex data rates are theoretically half of full-duplex.