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Shenzhen JHA Technology Co., Ltd is one of the leading manufacturers of hardened Ethernet, PoE, and fiber connectivity products specifically designed for harsh and demanding environments.
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2022
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What is Ethernet?
Ethernet is the most common type of computer network in the real world. There are two types of Ethernet: the first is classic Ethernet, and the second is switched Ethernet, which uses a device called a switch to connect different computers. Classic Ethernet is the original form of Ethernet, running at speeds ranging from 3 to 10 Mbps; switched Ethernet is the widely used Ethernet, which can run at high speeds such as 100, 1000, and 10000 Mbps.
The standard topology of Ethernet is a bus topology, but Fast Ethernet (100BASE-T, 1000BASE-T standards) uses switches to connect and organize the network in order to reduce conflicts and maximize network speed and efficiency. In this way, the topology of Ethernet becomes star; but logically, Ethernet still uses bus topology and CSMA/CD (Carrier Sense Multiple Access/Collision Detection, that is, carrier multiple access/collision detection). bus technology.
Ethernet implements the idea of multiple nodes in a radio system on a network sending information. Each node must acquire a cable or channel to transmit information, sometimes called Ether. (The name comes from the electromagnetic radiation medium assumed by physicists in the 19th century - optical ether. Later research proved that optical ether does not exist.) Each node has a globally unique 48-bit address, which is the MAC address assigned to the network card by the manufacturer , to ensure that all nodes on the Ethernet can identify each other. Because Ethernet is so ubiquitous, many manufacturers integrate Ethernet cards directly into computer motherboards.
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