It means "switch" is a kind of network equipment used for electrical (optical) signal forwarding.
It is a collective name of technologies that send information to be transmitted to the corresponding routes that meet the requirements according to the needs of transmitting information at both ends of the communication, using manual or automatic equipment.
Wide area switch
Is a kind of equipment that completes the information exchange function in the communication system, it is applied in the data link layer.
Refers to equipment used for data exchange within a switched LAN.
The switch can perform data transmission between multiple port pairs at the same time. Each port can be regarded as an independent physical network segment, and the network equipment connected to it enjoys the full bandwidth alone, without the need to compete with other equipment.
Full duplex of the switch
It means that the switch can receive data at the same time as sending data, and the two are synchronized.
Half-duplex of the switch
The so-called half-duplex means that only one action occurs in a time period.
All switching technologies are based on electrical signals. Even fiber-optic switches first convert optical signals into electrical signals. After the switching process, they return the optical signals to another optical fiber.