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Anonymous users2024-02-10In computer networks and IDC rooms, the unit of network transmission rate is expressed in b s (bits per second) (or bit s, sometimes written as bps, that is, bit per second).
In the field of communications and computers, special attention should be paid to the numerical values represented by the abbreviations of the units of quantity, such as "kilo", "mega", "giga", etc. The unit of quantity in a computer is measured in bytes, and the "thousand" of "kilobyte" is represented by a capital k, which is equal to 210, which is 1024, not 1000.
In the actual network application, the software often sees the speed displayed as 176kb s, 103kb s and other broadband speed sizes, because the unit of line bandwidth provided by the ISP is bit, and the general software displays bytes (bytes) (1byte=8bit), so the actual value can be obtained through conversion. Let's take 1M broadband as an example and convert it according to the conversion formula:
1mb/s=1024*1024b/s=1024kb/s=1024/8kb/s=128kb/s
Theoretically: the theoretical rate of 2M (i.e. 2MB s) broadband is: 256KBS, and the actual rate is about 150 240KBS; (The reason is caused by the user's computer performance, network equipment quality, resource usage, network peak period, service capacity, line attenuation, signal attenuation and other factors).
The theoretical rate of 4M (i.e. 4MB s) broadband is 512 kbs, and the actual rate is about 200 440 kbs. The uplink rate refers to the data transmission rate when the user's computer sends information to the network, and the downlink rate refers to the transmission rate when the network sends information to the user's computer.
For example, if you use FTP to upload a file to the Internet, the upload speed will affect the "uplink rate". And from the ** file on the Internet, what affects the ** speed is the "downlink rate". Of course, in the actual transmission process, the quality of the line, equipment (including computers and other equipment) will also have a greater or less impact on the speed.
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Anonymous users2024-02-09<>1. In the calculation of network speed, Clan Rock makes b=bit, b=byte, 8 b=1 b means that 8 lowercase b is an uppercase b, and the definition of the two trillion bureaus is different, so don't be confused.
2. To calculate the theoretical speed of 4m: 4m is 4mb s, and the theoretical speed formula: 4 1024 8=512kb s, please note that the jujube has become kb s according to the formula unit.
8 1024 8 = 1024kb s = 1mb s, 10m theoretical ** speed: 10 1024 8 = 1280kb s = 2m theoretical **speed + 8m theoretical ** speed, 50m theoretical ** speed: 50 1024 8 = 6400kb s, 1gb theoretical **speed:
1024 1024 8=128MB s, formula: megabyte bandwidth 1024 8=several kbs.
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