You might like to read this page: HowStuffWorks "How Internet Infrastructure Works"
Yes, satellite is used for some portions of the internet. But it is relatively slow and therefore not as good for VOIP as undersea cables. Satellites are also expensive both to launch and maintain.
Hi Electroenthusiast,
I don't know much about DNS servers, but the likely reason that ISP's rate their speeds differently (KBps or Kbps) is marketing.
8000Kbps sounds faster than 1000KBps.
Yes, Maybe... It's like misleading the customer.
Historically baud rates have always been that way - it's the only way that makes sense - bit rate is universal, byte rate depends on the size of the byte and the supporting bits used.
Historically baud rates have always been that way - it's the only way that makes sense - bit rate is universal, byte rate depends on the size of the byte and the supporting bits used.
I had never thought in this direction, thanks edeca. Thats why, the ISP tells that speed is 1024kbps(1Mbps), in that case we should get 128KBps download speed, but we get much lesser speed because of the above mentioned fact.....
- There are lots of overheads in networking protocols (IP and TCP headers from your machine, repackaged with PPP and ATM headers from the DSL router to the ISP etc) which mean that the entire bandwidth is not exclusively used for "downloading data". Nigel refers to these as "supporting bits".
1 Kilo bits = 1024/8 Bytes..Kilobits per second (10^3 or 1000 bytes) don't equate to kibibits (2^10 or 1024 bytes), the classic "network vs. storage" comparison.
Yes i know, some ppl have there max transfer rate of their wifi accesspnts to be like 1Mbps, even then they have buy a 16Mbps internet service.As for marketing, companies use all sorts of terms which make no sense to consumers. Subtle advertising suggesting that fibre is "better" than copper, phrases such as "up to 8Mbit/s" etc. Many customers have no idea that the "wireless router" they bought is only wireless in the house..
IMHO, 1 byte = 8 bits - that's a constant nowadays. I feel that the byte rate remains same and common throughout the world.
1 Kilo bits = 1024/8..
It certainly doesn't - even if you consider a 'byte' is always 8 bits - the number of extra bits can vary
edeca. The SI unit has nothing to do with binary notation.
It has everything to do with modern computer networking, which is what this thread is talking about. It was standardised many years before I studied it.
Both of these tiresome pages from Wikipedia explain:
https://en.wikipedia.org/wiki/Data_rate_units
https://en.wikipedia.org/wiki/IEC_60027-2
Sure, 1 kilobyte is widely and incorrectly taken as 1024 bytes. But that certainly hasn't been the standard since 1999 (!) and all studying I did to degree level in networking used multiples of 1000 for throughput calculations. Note that the IEC amendment applies to electronics as well as telecommunications, I wasn't aware of that.
"The standardized binary prefixes such as Ki- were relatively recently introduced and still face low adoption"
....Instead of just saying 'you're wrong' you should post a link to the appropriate site that shows how the notation should be.
I'll wager that most digital pundits weren't even aware that there was an SI prefix system adopted.
I'd call that a major marketing fail for SI.
....
You has 1 start bit, 7 or 8 data bits, 0 or 1 parity bit and 1, 1.5 or 2 stop bits. Two stop bits were necessary so the motor had time to stop.
The usual 1 start, 8 data and 2 stop so baud/10 sometimes is characters per second.
The start/stop bits are Overhead.
There are lots of overheads in networking protocols (IP and TCP headers from your machine, repackaged with PPP and ATM headers from the DSL router to the ISP etc) which mean that the entire bandwidth is not exclusively used for "downloading data". Nigel refers to these as "supporting bits".
Considering data transfer using internet, assume that i'm downloading 1MB (1000kilo bytes) file, whats the ratio of supporting bit's versus File Size. What i'm asking is, will every bit that is to be transferred have a set of supporting bits?/ will the complete 1MB file have a single set of supporting bits?.
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