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Charles Herzfeld, a director of the defense department agencythat built the Net, said, "The ARPANET (precursor of the Internet)was not started to create a Command and Control System that wouldsurvive a nuclear attack, as many now claim."
connects must have an IP address, just as in our post officeexample each house must have an address.
These addresses consist of a set of numbers, four groups of upto three digits separated by periods. Using all the possiblecombinations of these 12 numbers provides about 4 billion possibleaddresses in IPv4, the current system.
But of course devices other than serversconnect to the Internet cell phones for example. Each devicethat Rolex Yachtmaster 2
The other problem is how you ask the question. Do you mean howmany computers are on the Internet? How many people use the Net?How much data does it contain? How many Web sites there are?
Microsoft's Bing search engine team estimates the amount of Webpages at over one trillion. And to confirm this number, Google says it hasalready indexed more than one trillion discrete Web addresses.
To many people, the Internet is the World Wide Web.
One of the few estimates is from Eric Schmidt, CEO of Google,who said the amount of data on the Net was 5 billion gigabytes. Andthat was about five years ago.
So if we asked how big the postal system was in ourneighborhood, we could count the number of pieces of mail comingthrough the post office. But there is no post office on theInternet.
Even those more specific questions are hard to answer, but therehave been attempts. That is a little over aquarter of the world's population. Usage has grown almost 400percent since the end of 2000. Asia has the most users because ofits population, but only one out of five people in Asia use theNet. In North America, three out of four do.
Thatthe military commissioned the Internet and specified a distributedsystem so that a nuclear attack could not knock out thenetwork.
This structure has engendered a persistent Internet myth: Rolex Watch Womens
To solve that, a new standard is being worked out that uses alonger string of numbers for each address. This standard, calledIPv6, expands the number of addresses available to 340 trilliontrillion trillion, a number so large as to be virtuallymeaningless. Wikipedia says it equals a number of IP addresses aslarge as the number of atoms Prada Double Bag Beige in a metric ton of carbon for each ofthe 6.8 billion people alive today.
But with an increasing number of devices being connected to theInternet (in the future your kitchen appliances will beInternet aware) IPv4 will run out of addresses in a few years.
How big is the Internet
If mail delivery were a distributed system, then any house couldsend or deliver mail to any other house directly. That is how theInternet works, but instead of houses there are computers.
How much information does the Internet contain?
Let's look at it in terms of hardware. One estimate is thatthere are 75 million servers worldwide, but some say the numbercould be five times that. Rolex Yachtmaster Price Used
One of the problems is that the Internet is a distributed systemand not a centralized one. Think of mail delivery in yourneighborhood. That is a centralized system. Each piece of mail goesto or comes from the post office.
How big is the Internet? It seems like a simple question untilyou try to answer it.
The Internet was built as a distributed system so that a failureof any one part would not bring down the whole network. Things werenot as reliable back when the Net was built.
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