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Sanjubaba
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| | Thursday, March 02, 2006 - 6:53 am: | 
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सर्व प्रकारच्या माहीतीचि देवण घेवण करण्यासाठी
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Sanjubaba
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| | Thursday, March 02, 2006 - 6:56 am: |
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Knowledge Series - BandWidth Explained
Most hosting companies offer a variety of bandwidth options in their plans. So exactly what is bandwidth as it relates to web hosting? Put simply, bandwidth is the amount of traffic that is allowed to occur between your web site and the rest of the internet. The amount of bandwidth a hosting company can provide is determined by their network connections, both internal to their data center and external to the public internet.
Network Connectivity
The internet, in the most simplest of terms, is a group of millions of computers connected by networks. These connections within the internet can be large or small depending upon the cabling and equipment that is used at a particular internet location. It is the size of each network connection that determines how much bandwidth is available. For example, if you use a DSL connection to connect to the internet, you have 1.54 Mega bits (Mb) of bandwidth. Bandwidth therefore is measured in bits (a single 0 or 1). Bits are grouped in bytes which form words, text, and other information that is transferred between your computer and the internet.
If you have a DSL connection to the internet, you have dedicated bandwidth between your computer and your internet provider. But your internet provider may have thousands of DSL connections to their location. All of these connection aggregate at your internet provider who then has their own dedicated connection to the internet (or multiple connections) which is much larger than your single connection. They must have enough bandwidth to serve your computing needs as well as all of their other customers. So while you have a 1.54Mb connection to your internet provider, your internet provider may have a 255Mb connection to the internet so it can accommodate your needs and up to 166 other users (255/1.54).
Traffic
A very simple analogy to use to understand bandwidth and traffic is to think of highways and cars. Bandwidth is the number of lanes on the highway and traffic is the number of cars on the highway. If you are the only car on a highway, you can travel very quickly. If you are stuck in the middle of rush hour, you may travel very slowly since all of the lanes are being used up.
Traffic is simply the number of bits that are transferred on network connections. It is easiest to understand traffic using examples. One Gigabyte is 2 to the 30th power (1,073,741,824) bytes. One gigabyte is equal to 1,024 megabytes. To put this in perspective, it takes one byte to store one character. Imagine 100 file cabinets in a building, each of these cabinets holds 1000 folders. Each folder has 100 papers. Each paper contains 100 characters - A GB is all the characters in the building. An MP3 song is about 4MB, the same song in wav format is about 40MB, a full length movie can be 800MB to 1000MB (1000MB = 1GB).
If you were to transfer this MP3 song from a web site to your computer, you would create 4MB of traffic between the web site you are downloading from and your computer. Depending upon the network connection between the web site and the internet, the transfer may occur very quickly, or it could take time if other people are also downloading files at the same time. If, for example, the web site you download from has a 10MB connection to the internet, and you are the only person accessing that web site to download your MP3, your 4MB file will be the only traffic on that web site. However, if three people are all downloading that same MP at the same time, 12MB (3 x 4MB) of traffic has been created. Because in this example, the host only has 10MB of bandwidth, someone will have to wait. The network equipment at the hosting company will cycle through each person downloading the file and transfer a small portion at a time so each person's file transfer can take place, but the transfer for everyone downloading the file will be slower. If 100 people all came to the site and downloaded the MP3 at the same time, the transfers would be extremely slow. If the host wanted to decrease the time it took to download files simultaneously, it could increase the bandwidth of their internet connection (at a cost due to upgrading equipment).
Hosting Bandwidth
In the example above, we discussed traffic in terms of downloading an MP3 file. However, each time you visit a web site, you are creating traffic, because in order to view that web page on your computer, the web page is first downloaded to your computer (between the web site and you) which is then displayed using your browser software (Internet Explorer, Netscape, etc.) . The page itself is simply a file that creates traffic just like the MP3 file in the example above (however, a web page is usually much smaller than a music file).
A web page may be very small or large depending upon the amount of text and the number and quality of images integrated within the web page. For example, the home page for CNN.com is about 200KB (200 Kilobytes = 200,000 bytes = 1,600,000 bits). This is typically large for a web page. In comparison, Yahoo's home page is about 70KB.
How Much Bandwidth Is Enough?
It depends (don't you hate that answer). But in truth, it does. Since bandwidth is a significant determinant of hosting plan prices, you should take time to determine just how much is right for you. Almost all hosting plans have bandwidth requirements measured in months, so you need to estimate the amount of bandwidth that will be required by your site on a monthly basis
If you do not intend to provide file download capability from your site, the formula for calculating bandwidth is fairly straightforward:
Average Daily Visitors x Average Page Views x Average Page Size x 31 x Fudge Factor
If you intend to allow people to download files from your site, your bandwidth calculation should be:
[(Average Daily Visitors x Average Page Views x Average Page Size) + (Average Daily File Downloads x Average File Size)] x 31 x Fudge Factor
Let us examine each item in the formula:
Average Daily Visitors - The number of people you expect to visit your site, on average, each day. Depending upon how you market your site, this number could be from 1 to 1,000,000.
Average Page Views - On average, the number of web pages you expect a person to view. If you have 50 web pages in your web site, an average person may only view 5 of those pages each time they visit.
Average Page Size - The average size of your web pages, in Kilobytes (KB). If you have already designed your site, you can calculate this directly.
Average Daily File Downloads - The number of downloads you expect to occur on your site. This is a function of the numbers of visitors and how many times a visitor downloads a file, on average, each day.
Average File Size - Average file size of files that are downloadable from your site. Similar to your web pages, if you already know which files can be downloaded, you can calculate this directly.
Fudge Factor - A number greater than 1. Using 1.5 would be safe, which assumes that your estimate is off by 50%. However, if you were very unsure, you could use 2 or 3 to ensure that your bandwidth requirements are more than met.
Usually, hosting plans offer bandwidth in terms of Gigabytes (GB) per month. This is why our formula takes daily averages and multiplies them by 31.
Summary
Most personal or small business sites will not need more than 1GB of bandwidth per month. If you have a web site that is composed of static web pages and you expect little traffic to your site on a daily basis, go with a low bandwidth plan. If you go over the amount of bandwidth allocated in your plan, your hosting company could charge you over usage fees, so if you think the traffic to your site will be significant, you may want to go through the calculations above to estimate the amount of bandwidth required in a hosting plan.
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Sanju mahiti pharach upyogachi ahe...Chan mahiti dili ..abhar...tu kahi n/w engg or n/w certification keles ka ?
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Sanjubaba, is this your own write-up? If not, you should have cited the source of this material.
I found this article here : http://www.findmyhosting.com/bandwidth.htm
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I have got SBS2003 server with ISA2000. ADSL is connected for Internet. My ADSL is getting disconnected & i have to reboot the server? Is there any other solution (As its not getting dialed again). This happens every after 3/4 days. Can anyone Help me.
Thanks in advance.My email id is nanduk_ind@yahoo.com
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Sanjubaba
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| | Thursday, March 23, 2006 - 11:45 am: |
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Aparna, i haven't done any certificationx. And I got those information on site. Now, here is something more from me (offcource got it from mail)
An alternative keyboard in Windows
In case your keyboard or some keys stop working Microsoft provides you with an alternative way to type in using the mouse
To Work this tool go to
Start menu
Then
Select Run
Type in OSK
Press OK
A keyboard will appear that you can use both in Arabic and English.
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Maanus
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| | Monday, March 27, 2006 - 10:23 pm: |
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google.com is changing the way they show results, take a sneak peak.
http://arstechnica.com/news.ars/post/20060326-6460.html
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This is real cool for people who use notepad to write down any info on a
day to day basis…
Open a blank Notepad file
* Write .LOG as the first line of the file, followed by a carriage
return.
* Double-click the file to open it and notice that Notepad appends the
current date and time to the end of the file and places the cursor on
the line after.
* Type your notes and then save and close the file.
Each time you open the file, Notepad repeats the process, appending the
time and date to the end of the file and placing the cursor below it.
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Maanus
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| | Wednesday, April 05, 2006 - 3:18 pm: |
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this is news, apple hardware now officialy supports windows os http://www.apple.com/macosx/bootcamp/ ह्यामुळे लगेच apple च्या शेअर ची किंमत वाढायला लागलीय.
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Avjamode
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| | Sunday, April 23, 2006 - 6:51 am: |
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Call of Papers
For Publication in
Dream Earth's JOURNAL OF PRADUSHAN NIRMULAN
The main objective of the Dream Earth Publication is to publish original research papers of high repute on each and every aspect of environmental pollution and allied subjects and to promote the academic and research activities. Papers in interdisciplinary subjects are also considered for publication in the journal. Only unpublished work can be submitted for consideration in the journal. Also the research paper submitted shall not be under consideration for publication elsewhere. The authors will have to submit declaration to this effect. For procedure and style of submission of manuscript see guidelines given overleaf.
Submission is accepted under four manuscript types:
1. Current research
2. Critical Review
3. Short communication.
4. Correspondence (Letters to editor)
Dream Earth Publish World Class quarterly journal. annual membership fee for this :
Journal of pradushan nirmulan
Individual Rs. 300/- Organisation Rs.400/-
for three year membership and life membership do not hesitate to get in touch with
Dr. A.V. Jamode (Editor in chief)
Dream Earth Publication
Post.Box.no 08,Yavatmal 445 001(M.S.)
Ph.-9860049302,9372621224
email-avjamode@sify.com, Jamodeav@rediffmail.com,
dreamearth03@rediffmail.com
10 reprints will be sent to the Author exctra Reprints are supplied on demand of Authors after publication. Digital copy of Journal will also avaliable at exctra cost in the form of CD-ROM. Copyright of the all material publish in journal are with Dream Earth Publication, authors should submit copyright form after accepttence of manuscript.
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Maanus
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| | Saturday, May 06, 2006 - 8:34 pm: |
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This AJAX stuff is extremely kool. In recent project I have taken myself little out from domain knowledge and started to implement real technology. So we are using AJAX and it ROCKS.
no more struts, no more jsps, I haven 19t worked on UI layer since last 3 years... but with AJAX/XSL it is so easy to build the UI. I cant believe myself I myself developed the whole prototype in just 15 days. you can almost create each and every pixel of your webpage from AJAX calls.
So what we have is one jsp file with lot of prototype JavaScript. it sends XMLHttpRequest to the /AjaxServlet. Which is single point entry in the system.
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Zoom
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| | Friday, May 12, 2006 - 10:39 am: |
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Hello,
BarCamp! What is it? It's at KreSIT - IIT Powai this Saturday. Full day!
For more details visit: http://barcamp.org/BarCampMumbai
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Hi please send me one marathi kavita "Raang"(Queue)I am badly in search of it1 So please help me!
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Hi to all,
I am new to this group but this group is not new to me.
I was going through his group since 7 years.
But with different name that is Yoursmilind.
Now I am changing to deshpandemilind.
That's one kind of declaration from my side.
Ok and one request again please send me that mentioned kavita.
Keep loving me!
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Bee
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| | Wednesday, May 24, 2006 - 5:15 am: |
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Welcome back Milinda!
If u tell us the poet of Raang, I will try my best to get it for u.
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Trupti
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| | Thursday, May 25, 2006 - 7:02 pm: |
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Hi group , this is my first visit to this group. n i like to be a member of this group. so plz include me in our group.
c u all
Most of all the beautiful things in life
Come by twos and threes, by dozens and hundreds.
Plenty of roses, stars, sunsets, rainbows,
Brothers, and sisters, aunts and cousins,
But you've only one mother in the whole world.
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Nayana
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| | Thursday, June 01, 2006 - 3:24 pm: |
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This is regarding VPN connection on my machine at home and it doesn't give me access to this software..while surfing on internet I came to know windows XP firewall doesn't support VPN...is that true? My machine has windows XP firewall It gives me error message " ERROR 51: Unable to communicate with the VPN subsystem. Please make sure that you have at least one network interface that is currently active and has an IP address and start this application again"
Does anybody know this issue?
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can't you disable the firewall and try again? i also have windows xp with firewall, vpn works fine.
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Ajay
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| | Thursday, June 01, 2006 - 4:28 pm: |
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In case you have a router (not connecting directly to your ISP) please check with your company's admin the router model is compatible with the VPN they have implemented. In my previous company, we could get certain brands of routers to work with VPN connection.
I have windows firewall (both xp and XP pro) and both machines work fine with VPN as well.
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Nayana
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| | Thursday, June 01, 2006 - 4:33 pm: |
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I tried this now...but same error coming again...Do u have any other solution on this..Please let me know.
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| चोखंदळ ग्राहक |
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| महाराष्ट्र धर्म वाढवावा |
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| व्यक्तिपासून वल्लीपर्यंत |
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| पांढर्यावरचे काळे |
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| गावातल्या गावात |
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| तंत्रलेल्या मंत्रबनात |
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| आरोह अवरोह |
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| शुभंकरोती कल्याणम् |
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| विखुरलेले मोती |
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| हितगुज गणेशोत्सव २००६ |
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