The broadband rate is approximately [103--200kB/s]. The reason is affected by user computer performance, network equipment quality, resource usage, network peak periods, website service capabilities, line attenuation, signal attenuation, etc. caused by factors.
Broadband raterefers to the maximum theoretical rate that can be achieved technically, generally the upload and download speeds, the higher the rate , the faster the upload and download. The broadband service rate applied by the user is the maximum theoretical rate. Since the user's Internet access is also affected by the configuration of the user's computer software and hardware, the address of the website being browsed, the bandwidth of the peer website, etc., therefore, the user's Internet access rate is usually low. at the theoretical rate value.
Theoretically, 2M, that is, 2Mb/s, the theoretical broadband rate is 256KB/s. The actual rate is approximately103--200kB/s. (The reason is affected by many factors such as user computer performance, network equipment quality, resource usage, network peak periods, website service capabilities, line attenuation, signal attenuation and other factors). 4M, that is, the theoretical rate of 4Mb/s broadband is 512KB/s, and the actual rate is approximately 200---440kB/s.
ADSL uses two different frequency bands to transmit uplink and downlink channels respectively, and its downlink can reach 8Mbit/s and uplink can reach 640Kbit/s. The download rate that operators can provide to individual users is 512Kbit/s. It can also dynamically adjust the user's access speed based on the quality of the phone line and the distance of the transmission distance, which can fully meet the requirements of multimedia video applications.
In computer science, bit is the smallest unit that represents information, called a binary bit; generally represented by 0 and 1. Byte is called a byte, which is composed of 8 bits (8bit) to form a byte (1Byte), which is used to represent a character in the computer. Bit and Byte can be converted, and the conversion relationship is: 1Byte=8bit (or abbreviated as: 1B=8b); in practical applications, the abbreviation is generally used, that is, the abbreviation of 1bit is 1b (note that it is the lowercase English letter b), 1Byte The abbreviation is 1B (note the capital letter B).
In computer networks or network operators, generally, the unit of broadband rate is expressed in bps (or b/s); bps means bits per second, which means how many bits of information are transmitted per second, which is bit per Abbreviation for second. In actual terms, 1M bandwidth means 1Mbps (Mbps is megabits per second, not MBps).
Conversion formula: 1B=8b 1B/s=8b/s (or 1Bps=8bps
Specification Tip: In the actual writing specification, B should represent Byte(byte ), b should represent bit, but in daily actual writing, some people mix bit and Byte as b. For example, Mb/s and MB/s are both mixed as Mb/s, which leads to people in actual writing. Errors occur due to unit confusion in calculations.
Example: In our actual Internet applications, when downloading software, we often see broadband speeds such as the download speed displayed as 128KBps (KB/s), 103KB/s, etc. word, because the line bandwidth provided by the ISP uses bits, and the general download software displays bytes (1 byte = 8 bits), so conversion is required to get the actual value. However, we can convert it according to the conversion formula : 128KB/s=128×8(Kb/s)=1024Kb/s=1Mb/s, that is, 128KB/s=1Mbps, 1Mbps=1024Kbps=1024/8KBps=128KB/s
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