Today, me and my brother had little discussion about Internet and I enjoyed that because, it's after long time, could be years that he came up with a question which really made feel 'wow,.. this is discussion'.
Well, He asked me :
'What is our Internet speed?'
and
'Why your laptop has slow internet connection than the desktop I sit on?'
Before, I answered those questions straight away, I thought it's time to act like GURU(ehehe, just kidding) and give him some divine knowledge on how Internet works. Though I'm not an Internet Guru, I do have basic understanding on those things and I ended up giving him all the things that he needed to know.
I started with, 'How many types of connections are available?' and then I went on like:
There are actually from slow to high speed internet connection depending upon the service providers and technology being used and these days service providers have one name, 'Broadband' but categorically, we can divide these connections based on functionality(note that, i'm writing functionality) in following ways:
Dialup Internet
Cable Internet
DSL Internet
Satellite Internet
Dialup Internet are based on Telephone lines and ISP usually wants us to dial their designated number, we dial them and we get connected to wired world. The download/upload is terribly slow as compared to today's modern world internet connectivity. May be at their times, they were HERO but now, they're obsolete because of their slow speed. In my country Nepal(may be other places too), it's still an expensive thing and in use because, Nepalese end up being charged for double time(one for telephone usage and one for internet bill) but what I learned here is, USA companies are giving dialup for free. So, it's the cheapest but slowest means of internet connectivity over here. Their speed never exceeded 56.Kbps(theoritically). So, you are online, when you dial the ISP number and get connected once verified.
Cable Internet are normally based on the cable wires which local Cable TV operator provides. You can either subscribe to their TV package and can get Internet service for added supplementary price or You can just subscribe to them for Internet service(only in USA, I learned that, But, In Nepal when I was there, one has to have TV channel and then only Internet service). Speed is quite broad than dial-up, so, it falls under broadband connection. Precisely, the burstable speed could go upto 4 Mbps from 1 Mbps for download, and for upload umm may be 512 Kbps(theoritically). And, the speed often fluctuates, you know. so not a quite stable connection.
DSL Internet are something which amaze me from time to time. These are the fastest connection available to home users to my understanding(forget fibre optics for now). The source of this type of connection is still phone line but the service provider has special device or modem called DSL modem which maximizes the throughput of normal telephone line and what I believed is it has the most stable internet connection, it never fluctuates. I'm writing these words from this very connection and when people asks me 'hey what's your download speed', I usually answer them with 'ahh. it's 160KBps(please note KB not Kb) you know'. I could've said it's got 3 Mbps standard DSL speed/bandwidth(it's the thickness of the speed, thicker the bandwidth,higher the speed) but they would wrong me calculating in their mind '3 MEGA BYTES PER SECOND??'. So, i usually tell them the converted figures( I'll show you how to convert those figures)
Satellite Internet, these are the Internet I've seen here in some places. People over here have strange fantasies to live up in the rocky mountains and they still have internet connection, that's because, they're rich and where no cable or line goes, there sits Dish Antenna and draws internet off the source in the sky or from some tower located somewhere else(may be that's radio.. i may be wrong). I don't have much experience with this thing, just read about it. It's every more theoretical for me :)
So, these are the types of internet based upon the functionality. You might have read differently based on different things like wired/wireless/radio/blah blah types of internet.
And, I answered my brother, our internet speed is 3Mbps(actually, they have 6Mbps plan recently launched too but, it's too expensive for now) which calculates to some 360KBps download in real time.
He replied annoyingly,"what 360KBps and 3Mbps, I'm not getting it?"
"Look, when we apply for service, we gotta know how much speed we're applying for and those company guys would tell you, it's 3Mbps/6Mbps, and you've to make choice whether you understand or not, but even a donkey would figure out that higher is better. So, 3Mbps is the standard for denoting internet speed. Do you remember 56.6Kbps modem??" I gently told him.
He nodded in agreement, " Oh yeah, right!! so, we've come this far.. wow.. it's 3Mbps, not mere 56.6Kbps or 14.4Kbps"
"Yes,now you got that in your head, that's why these speeds are termed as BROADBAND connectivity",I replied back with a laugh.
After a while thinking, he asked me another question,"But how did you calculated 3Mbps to around 360KBps?"
"bro, you and I went to same school, lemme refresh you.
Computer and everything about computer is Digital. Data flows in digital format always okie?. And with digital , it's always 0 and 1. These are the basic norms used in Digital Era. 0 or 1 comprises one 'bit' okie? and 8 bit equals 1 byte.
(i wrote in paper and showed him with something like below to refresh his memory)
0,1=1 bit
8 bit= 1 byte
1024 byte= 1 KB(kiloByte)
1024 KB= 1 MB(MegaBytes)
so, 1KB(KiloByte) and 1Kb(KiloBit) are two different things.
Therefore, if it's 56.6 Kbps, then 56.6 x 1000 = 56,000 bits(Kilo normally represents 1000 or you can write 1024, no problem)
Let's find it's actually download speed; lets divide 56,000 bits by 8 to find it's BYTE value.
so, 56,000/8 = 7075 Bytes
and 7075/1024 = 6.9 KBps(KiloBytes per seconds)
So, see?? 56.6 Kbps modem will give you the download speed off 6.9KBps, well theoritically, in reality you may be half of the speed, may be 3 KBps or even less in worst case. This is how I calculate the speed, okie?"
After I finished writing/talking, he went on calculating his own,"Okie, if so, I want to calculate 3Mbps myself, thanks for the refreshment.
(he calculated something like below)
3Mbps= 3 x 1000 x 1000 = 3,000,000(multiplying by two 1000 because, it's in MEGA) bits
and,
3,000,000/8 = 375,000 bytes
(lets convert it to KiloBytes)
375,000/1024 = 366.2 KiloBytes
So, 3Mbps would give you 366.2 KiloBytes of download speed, precisely. WOW, "
I stopped him in the middle,"Eventhough, it's theoritically correct speed, but usually you get half of it's speed due to many reasons like congestion in network, data compression taking place in real time and so.( I don't think he understood them all but I made him clear, it's not the speed we get as he calculated). Therefore, even if it says 366.2 KB of download speed, you'll get half or less of it. TRY IT, DOWNLOAD SOMETHING HUGE."
What else, he went on downloading one Game setup file and the status was showing between, 160KBps-170KBps on 3Mbps broadband connection. He thought I was right. It should've been downloading at 360KBps but as I wrote before, it's only in theory. In reality it's different.
He seemed quite satisfied with my answers and next question was like why the speed on your laptop is not same as in this desktop.
I thought for a while, tried to remember all those jargons and terms, I've learned somewhere and replied," umm, my laptop is not connected on wire, it's wireless and do you know how's the standard of wireless connectivity measured?"
He said,"No.."
Thinking for a while, I replied,"well, they've standard like 802.11a,802.11b,802.11g and so. My laptop's inbuilt Aetheros Wireless adapter uses 802.11g Wireless standard and notice the alphabet at the end, like 'a', 'b' and 'g'.(in Layman's term) Higher the alphabet, higher the speed and features. So, 802.11g wireless connects at maximum speed of 54Mbps."
I showed him rightclicking on my desktop's LAN connection icon(two small computer icon blinking) which stated as 100Mbps as connection status. Then, I showed him, my laptops connection status which was showing me 54Mbps.
Lastly, " this desktop is connected on wire to the router and my laptop is not. If this desktop would have connected to router through wireless adaptor, it would have also 54Mbps as connection status. But since, this is wired to router, it gets the maximum speed and my wireless laptop gets just half of the network speed of my desktop. That's it."
He checked the download speed on my laptop and it was like 70KBps to 90KBps, which is not bad :)
-end of conversation-
I've used 6KBps speed at my home in Nepal, and here I'm using over 160 KBps which is far better and I can watch movies, streaming contents without problem :)
If you've similar connection, you can actually, estimate the download time. Mostly, you can download 100MB files and calculate the time it takes to download Or, you figure out your Connection type, calculate it's download speed and before you download something, why not calculate how much time it's going to take. It's fun you know.. DO IT NOW!!! ;)
PS:If you've any more to add to this conversation with me and my brother, please.. all the comments and constructive criticisms are most welcomed.
Read more It's Interesting!
Now, if you have cared to read this comic above, then you might have guessed, what am I writing about. It's written somewhere that every 3 seconds, a new blog comes into existence to this jumbled up wired world, and at the same ratio, blog dies too. So, it's no more a big deal to setup a blog. Looking at the comic strip above, is that the real intention of blogging?? Sad but true, bloggers have come up with this different idea. They're sort of deliberately writing things against companies which could possibly hinder the reputation and growth too. These people are not blogging in true sense, even if they are making a blog post, they are writing contents which are driven by their personal grudge and vengeance. If you've come across certain blogs, which writes bad things, only bad things about companies, would you easily believe them?
