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发表于 2011-12-3 12:31 PM |只看该作者 |正序浏览

本帖最后由 jtp2276 于 2012-12-23 07:23 AM 编辑

Internet Speed

Data Transfer
Speed (Files)*
256 kbps~31 KB/s
384 kbps~46.9 KB/s
512 kbps~62.5 KB/s
768 kbps~93.8 KB/s
1 mbps~122.1 KB/s

kbps = kilobits per second
mbps = megabits per second
KB/s = KiloBytes per second
To convert from network speed (kilobits per second, kbps) to transfer rates (KiloBytes per second, KB/s), multiply by 0.1220703125. *

[ tech/computing ]

Introduction - K = 1,024 ; k= 1,000 ; B = Bytes ; b= bits

Filesize (how big a file is on your computer) is usually measured in units of "kilobytes," "megabytes," and "gigabytes."

In this computing (binary, but not data transfer) usage, 'K' (uppercase) represents a multiplier of 1,024.
Other abbreviations use this same base of 1,024:

1 KB (one KiloByte) = 1,024 Bytes (approximately 1 thousand Bytes)
1 MB (one MegaByte) = 1,024 KB (approximately 1 million Bytes)
1 GB (one GigaByte) = 1,024 MB (approximately 1 billion Bytes)
Data transfer speed on the other hand is expressed in bits. In bit rates the abbreviations are as follows:

1 kbps = 1,000 bits per second
1 Mbps = 1,000,000 bits per second.
1 Gbps = 1,000,000,000 bits per second.
kbps (kilobits/sec) means thousands of bits per second
mbps or Mbps (megabits/sec) means millions of bits per second
gbps or Gbps (gigabits/sec) means billions of bits per second (where "billion"= 1,000,000,000.00")
tbps (terabits/sec) means trillions of bits per second (as in "terabit router" or "terabit speeds")
pbps (petabits/sec) means quadrillions of bits per second.
Examples:

"Gigabit Ethernet [1000Base-T] is capabile of speeds up to 1000 mbps (mega-bits per second), or 1 gbps."
"10Base-T ethernet operates at 10 mbps and uses baseband transmission methods."
"SATA II defines the architecture (SATA-300) for Serial ATA communications of up to 3 gbps."
Alternate forms:

bbps = billion bits per second (where b = 1 000 000 000)
mbps = million bits per second (where m = 1 000 000)
kbps = thousand bits per second (where k = 1 000)
tbps = trillion bits per second (where t = 1 000 000 000 000) [theoretical]

我们先来看lyberty这文章在来说
上面意只是大盖.请到下面网址看全文
http://www.lyberty.com/encyc/articles/kb_kilobytes.html

1.看完了来选这文稿说的对不对...[因有同学说不对..]
只有第1第2选项而已

2.其实大家对.Internet Transfer Speeds..网速..到地的认知是多少
只有第3.4.5.6选项而已

PS.请不要发表人身攻击的话..