What are the main technical elements that determine LAN performance?

The main technical factors that determine the performance of the LAN are network topology, transmission media and media access control methods.

Transmission medium, which is the physical path between the transmitter and receiver in the data transmission system. It can be divided into two major categories, namely guided transmission media and unguided transmission media. In guided transmission media, electromagnetic waves are guided to propagate along solid media (copper wires or optical fibers), while non-guided transmission media refers to free space. The transmission of electromagnetic waves in non-guided transmission media is often called wireless propagation. Computers are interconnected by transmission media (such as electrical cables, fiber optic cables, and wireless media) and network adapters (also called network cards).

Topology is the topology of a computer network. It abstracts the computer and communication equipment in the network as a point, and abstracts the transmission medium as a line. The geometric figure composed of points and lines is the topology of the computer network. structure. Network topology: divided into logical topology and physical topology. Here we talk about physical topology, which can be divided into bus type, star type, ring type, tree type, hybrid type, etc.

Media access control methods (IEEE802.3 LAN protocol, etc.), commonly known as protocols, are a collection of individual protocols and one protocol. It can be divided into Ethernet, Token Ring network, FDDI network and wireless LAN, etc. Among them, Ethernet is the most commonly used LAN technology currently.

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