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Web Hosting - DNS, How The Internet Keeps Track of Names
The way computers communicate is, in a way, very similar to something very familiar: the postal system that delivers letters and packages. Here's how...
The Internet is just what the name suggests, a large inter-connected set of networks. But those networks are pointless without the one part that forms what is called their 'end-nodes', otherwise known as computers. Those computers often need to share information because the people who use them want to share information.
But, in a system where there are millions of separate computers, how can you enable them all to communicate? One very important feature of that solution is performed by something called DNS, the Domain Name System.
Every part of a network that is going to send or receive information is assigned an IP address. That's a numeric identifier that uniquely specifies a particular 'node', such as a computer, a router that directs traffic or other component. They look like this: 209.131.36.158
But those numbers are more difficult for people to remember and work with. They also aren't very attractive from a marketing perspective. So, a naming system was layered on top of some of them, mostly the computers involved, though routers have names, too.
But once you have a system that associates a unique IP address to a given name, you need some way of keeping track of all of them. That's carried out by several different pieces of the system: Name Registrars, DNS Servers and other components.
The Name Registrars, overseen by IANA (Internet Assigned Numbers Authority) and other international bodies, provide and keep track of domain names. When you register with GoDaddy or any of a hundred other intermediate companies, ultimately that information makes its way into a number of specialized databases stored inside DNS Servers.
A DNS Server is the hardware and/or software that tracks and forwards the IP Address/Domain Name pair from one place to the next. In many cases, there are a number of them between your browser and the remote computer you want to share information with.
Suppose you request information from, say, Yahoo's site by clicking on a link on their site. DNS resolves (translates) the name of WHO IS making the request and OF WHOM, to addresses, then passes the request through the network to the requested IP address. The requested data is then passed back through the mesh of network components to your computer and displayed in your browser.
Whether the communication is between a desktop computer and a server somewhere, or between one server and another, the process is essentially the same. DNS servers translate names into IP addresses and the requests for data are forwarded on.
In some cases those DNS servers are part of a specialized network computer whose sole job is to do the translation and forwarding. In other cases the DNS software may reside on a server that also houses a database of general data, or stores email, or performs other functions.
But however complicated the chain or the parts, the basic process is simple. Translate the name to an address, just as the postal system does. Whether international or local, your name is associated with an address, and the deliveries are made to the address, then forwarded to a particular name.
Extra! Extra! Getting into the Newspaper Business (writing news articles) The news is now and those who write it know the stories first. Getting into the newspaper business can be difficult because of the competitive nature of the news. The successful reporter needs to be organized, efficient and able to work under extreme pressure. The flip side is that a newspaper writer is almost always a celebrity. If he or she works for a large newspaper, his name may be known all over the country. If he only works for a small town paper, that town will recognize his name. Writing news articles involves ups and downs, so read on to learn more about it. Newspaper Overview A newspaper office is an interesting place to be. Bright and early at eight o’clock in the morning, the office is quiet and dark. As the rest of the world is counting down the minutes to quitting time, the reporters’ desks start to fill up with hurried typing and flipping through notes. Well after dark, the last stories get wrapped up and put to bed. They may have been changed a couple of time as new developments occurred. Some stories written will make it to the front page. Some stories though will get significantly cut or cut from the paper all together. Writing news articles may be very rewarding, but it also requires a different kind of lifestyle than most careers. Becoming a Reporter If you are interested in writing news articles, you may also be interested in learning a little bit more about what is involved in becoming a reporter. Writing is a very important piece of being a successful reporter. Writing news articles involves close attention to journalistic style. Most full time reporters have journalism degrees. Those that don’t have learned to imitate the style with precision. A good journalist must learn the art of interviewing a subject. Freelancing If the full time reporting job is not for you, look into writing news articles on a freelance basis. It will help if you develop a relationship with the editor of the newspaper you intend to write for. Since so many people want to see their names in print, it can be hard to break into the freelance newspaper business. Writing news articles on a freelance basis requires a good eye for newsworthy topics as well as a thorough and fair representation of the facts. Freelancing takes practice. Don’t be discouraged if the editor doesn’t like your work initially. If you keep trying, you’re bound to stumble onto something great. Once you are in and an editor likes you, you’ll be able to work more freely. What’s News? Before you are ready for writing news articles, you should be ready to judge for yourself what news is and what it is not. Regular reporters are assigned stories to write, so they rarely have to come up with topics on their own. Freelancers write their stories and then try to sell them. The first rule about deciding what is news is that if someone asks you to write about it, it’s not news. You should have to dig up the good stories. If you need inspiration, just start talking to people. Get to know a few of the prominent people in your community. Build relationships and keep asking questions. The stories will come out eventually. You can also take a tour of your community with your eyes wide open. Look for anything suspicious, dangerous or exceedingly beautiful. Take your camera wherever you go just in case you happen to be an eyewitness to something newsworthy. Writing news articles can be done as a career or as a freelance pursuit. Whichever you choose, you’re sure to lead a life with some adventure. The news is always happening and it’s always something new. Events of copyright infringement The Events of Copyright Infringement: Innocent People Infringing Accidentally Copyright infringement is in the news a lot lately – it’s hard to miss stories about kids being carted off to jail or seriously fined for downloading music or movies off the internet. I’ve even heard about a lady was fined for tens of thousands of dollars because of the events of copyright infringement – her grandson downloading music, and she couldn’t prove it wasn’t her. The events of copyright infringement are complicated – and not easy to define. Surfing the internet has its advantages and disadvantages, that’s for sure. We’re able to find useful information quickly, but how close are we pertaining to copyright laws? Do we even know what is and is not acceptable? A couple of the more pertinent questions have been asked below: If you hear a great new band, and then download a song from MySpace, is that legal or not? The events of copyright infringement are not only limited by Kazaa, Morpheus, or some other file sharing peer to peer (P2P) service. If you download a song - no matter if you’re on a website or a MySpace page - and it isn’t coming from the artist themselves, you may want to think about downloading it. Chances are, if it’s not coming from them, you can’t have it – unless it is under a Creative Commons License. Creative Commons gives the exact ways in which you can use the license – and many times those are completely free and legal to download – so make sure you check if it’s under a CC License. If I’m writing a paper, or article, and I want to quote another website, can I? First of all, did you know the minute you write or create something, you hold the copyright to it? ESPECIALLY if you’re writing it online – it’s very easy to track things in the internet page. So, if you’re writing a blog, all the things you’ve written (no matter good or bad) are there permanently, thanks to archive.org, and you can review last versions of your web pages. Sometimes, people we can use – rather heavily – someone else’s work in our own, and think we’re small and anonymous. That no one will notice by the time you get it down – you’re just ‘borrowing’ it. Before you begin quoting anyone’s website – from CNN to your local neighborhood hardware store – you need to ask the person who holds the copyright if you can. Usually, they’ll let you if you attribute to them. Depending who you talk to, you’ll either have to pay royalties or license rights to republish. If you don’t ask before you quote, you’re beginning the events of copyright infringement and you are opening yourself up for a lawsuit. As you can see, the events of copyright infringement can begin at any time, beginning with normal ‘everyday’ activities. It’s just as easy to infringe on as it is to be infringed upon. Make sure you check your copyright using CopyScape or some other service, and you can check your work against other works on the internet, and make sure that you’re not infringing someone or vice versa. In this day it’s easy to protect yourself from getting infringed upon, and the events of copyright infringement are easy to track. It’s easy for innocent people to get caught in copyright infringement, like children they didn’t know what they could and couldn’t do. Make sure, in all you do, that you’re striving to do the best you can, and you’ll be certain not to fall victim to your own infringing demons. |