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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: 188.8.131.52
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.
Software copyright act The Software Copyright Act was a Great Step in the Right Direction The software copyright act, which is actually called the Digital Millennium Copyright Act has given software developers a little more power when it comes to protecting their works. If you've bought software in the last few years I'm sure you've noticed some of the changes that have been made in the software buying process. If not, then you really should wake up and take note. Some of the more noteworthy achievements of this act are the following: 1) It is now a crime to go around anti-piracy measures in software. 2) It is no longer legal to make, sale, or give away software or devices that were invented for the purpose of cracking codes enabling the illegal copying of software. 3) Limits the liability that ISPs (as far as copyright infringement violations) when information is transmitted online. The problem isn't the people want to be bad or do something wrong. Most of us by nature want to do the right thing. The problem lies in educating people to the fact that it really is stealing when you bootleg, pirate, illegally download, or otherwise acquire copies of software that you didn't pay for. It's one of those 'white lie' types of crimes for most people and they don't really see how it will hurt anyone for them to copy a game that their brother, cousin, uncle, or friend has. Someone paid for it after all. The problem is that at $50 plus being the average price for computer games and simple software if 10 million people are doing it, the numbers are staggering and they add up quickly. The software copyright act sought to protect businesses from losing money this way. The software copyright act was the worldwide response to a growing problem. This problem was so widespread with illegal downloading of music that lawsuits and massive commercial ad campaigns were initiated in order to curtail illegal downloading activities when it comes to music. It seems to be working to some degree. Fewer people are illegally downloading music; the downside is that these people aren't buying as much music either. The reason is because they are no longer being exposed to the wide variety of music and artists that they were getting freely when downloading music each night at no cost. This equals lower record sales and is becoming a problem of lower movie sales and software sales as well. People aren't trying new games like they could before the software copyright act by going to LAN parties and everyone sharing a copy to play, now everyone has to own a copy before they can play. While this may be great for the companies that make a few (a minimal few at best) extra sales on the games for the sake of a great party but for the most part, it is costing them the extra money that could be made by 10 people finding they liked the game enough to go out and buy it so they could play it whenever (and the next group of 10 they will introduce the game to) Gamers are a funny group and software copyright act or no, they are going to stick with the software and games that serve them best. The software copyright act was created in order to protect the rights of those writing and developing computer software. We want those who fill our lives with fun games, useful tools, and great ways to connect to friends and family to continue providing these great services and to get paid for the ones they've already provided. The software copyright act is one giant step in the right direction as far as I'm concerned.
News is News All Over the World (writing newspaper articles) Writing newspaper articles is a fun and interesting line of work. Newspapers exist in big cities, small towns, within corporations and on college campuses. Newspapers are printed for special interest groups as well as for world and national news. There are free newspapers and papers that appear for sale on newsstands every day. With such a large variety of newspaper types printed, there are myriads of possible opportunities for writing newspaper articles. There are some basic rules to writing articles for any newspaper and there are also some specific aspects to know about each type. Writing Newspaper Articles In general, to write a newspaper article there are a few rules that apply across the board. First, the news has to be relevant. Because newspapers make up a genre of writing that is constantly refreshing itself, there is no room for common knowledge or historical pieces. The exception is if those kinds of writing serve to connect to a current issue or event. People who read newspapers want to know what?s happening now. For that reason, writing newspaper articles often involves relatively high pressure to get the latest news written each and every day. There are some low-pressure possibilities in writing newspaper articles though. The Infrequent Print Several newspapers are only printed weekly or even monthly. In small towns that must get their papers printed off-site, it is not feasible to create a paper each and every day. That means that there?s a week, every week, to get the news in and written. Another example of low pressure writing for newspapers is working for a free publication. Free newspapers are often geared to a special interest group. Since that group is not paying for its paper, they may only receive the interesting tidbits once a month. Writing for these kinds of newspapers becomes focused on creativity and niche writing because the current events will have already reached the audience through more frequent publications. The Daily News from Top to Bottom The most reliable and frequent publications are those of big, national newspapers. The staffs are very large and are able to print very clean copies of very full newspapers. By clean, that means without errors. Smaller papers are also printed daily, but they seem almost insignificant except to the people of the local community. They receive national news second hand and run very small staffs. Interestingly enough, none of these daily papers are really about the news. Of course that is where most of the effort lies and that is the reason that people buy the papers, but it is not the root of a newspaper. Writing newspaper articles is a job heavily dependent on the advertising industry. A newspaper will only be as large as there are ads to pay for it. Newspapers do not make their money at the newsstand. They pay the bills and the employees with money from advertisers. On Campus News Working for a university paper will not be representative in the area of newspaper advertising. While some businesses do pay for ads in university papers, the funding comes from the school. If for some reason there were no advertisers one day, the paper would still go out. University publications are much more focused on the development of the students than making a successful business. Most campus papers are free and are created by students. School is a great place to get started in writing newspaper articles. The environment is challenging, but nurturing at the same time. The deadlines and standards still exist, but the writer gets great encouragement and training through the work. After working for a college paper, it will be much easier to get a job with newspapers of the cities and towns. Writing newspaper articles can be a great job. There are so many opportunities to get into writing that it is hard to pass them up. Some jobs may be very difficult to get, but others will be steps towards increasing writing success.