1. Ethernet refers to the baseband LAN specification created by Xerox and jointly developed by Xerox, Intel and DEC. It is the most common communication protocol standard adopted by local area networks at present. The Ethernet network uses CSMA/CD (Carrier Sense Multiple Access and Collision Detection) technology, and runs on various types of cables at the speed of 1m/s.. Ethernet is similar to IEEE82.3 series standards.
2. Wired broadband: The access mode of wired broadband is similar to Ethernet access. In terms of stability alone, it is much stronger than ADSL, which is an asymmetric digital subscriber line. Although the access is a public network dynamic IP, it is still limited by the speed of the operator's public network exit.
Ethernet is the most common communication protocol standard adopted by local area networks. This standard defines the cable types and signal processing methods used in local area network (LAN). Ethernet transmits packets between interconnected devices at a rate of 1-1Mbps. Ethernet may work in two modes, half-duplex and full-duplex.
actually, there is no strict definition of broadband. Generally, the upper limit of the current dial-up Internet access rate is 56Kbps, and the access below 56Kbps is called "narrowband", while the access mode above it is classified as "broadband". If there must be a definition, it can meet the bandwidth that people can feel when transmitting various media on the network, so it is also a dynamic and developing concept. At present, broadband refers to the network infrastructure and its services with a transmission rate of over 1M(1M=124KB), which can realize 24-hour connection without dial-up access.
Extended data
Cable broadband speed
Many people are worried? Cable Modem? Our bandwidth is * * *, so if there are more people surfing the Internet, the speed will be reduced. Here we explain it from different angles, such as technology and trend, to help you understand how big the bandwidth of Cable Modem is. It has been mentioned before that Cable Modem can generate 27 M/36 Mbps bandwidth in a single cable TV channel with different modulation technologies, which is equivalent to 16-22 channels. Bandwidth of ADSL private line. According to the bandwidth of each Cable channel and the number of users surfing the Internet at the same time on this channel, we can calculate the average bandwidth that everyone can feel.
the reason why "feeling" is used here is that the bandwidth of Cable Modem, like Ethernet, is enjoyed by all users. The estimation of the bandwidth available to each person on a Shared Media is based on a model called "statistical multiplexing". When other users do not transmit a lot, users can enjoy almost all the bandwidth, which is why cable modem users often enjoy ultra-high speed. It is estimated that every broadband Internet user can enjoy an average speed of 2-5 Kbps, and the fastest transmission speed is 15 Kbps (equivalent to an ADSL private line). In the future network development, when the transmission speed reaches more than 1Gbps, the average speed enjoyed by each user will be more than 2Mpbs.
Resources
Cable Broadband-Baidu Encyclopedia