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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: 126.96.36.199
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.
How to Work the Internet to your Advantage in a Job Search Are you on the hunt for the perfect job? If you need a new job and you are spending every day running out and buying a paper and flipping through the classified ads, you are way out of date. The newest way to find a job is to use the Internet in your job search. After all, nearly everything else people do these days is done online, so why not looking for your next job. The best part is that the Internet is much better than the classified ads in your local paper when it comes to finding a job you love. When you search for a job online, you have a world of employment opportunities right at your fingertips. There are many ways you start your search for jobs online. There are several websites that are dedicated just to job hunting. On these kinds of sites, you can search through a database of literally thousands and thousands of jobs until you find some that appeal to you. Most of these websites let you search for jobs using many different criteria, from job location to job field to starting salary to jobs that let you work from home. These websites can be a wonderful way of getting a feel for what kind of jobs are out there and what the going rate of pay is for any job in any industry, and how that pay fluctuates regionally. In addition, these sites are also ideal if you are thinking of moving, and want to move to someplace you can find a job. If you don?t care where you move, you can look for cities where the job market is hot. If you know where you want to move, you can look for jobs in your desired city and get the inside track on the job market from no matter where you are. Additionally, on these job listings websites, you can upload your own resume to the site. That way, you can apply to jobs through the website with the click of a button, and potential employers can find you when they are looking for someone with your skills. Another way you can use the Internet to your advantage when you are hunting for a job is to build your own job hunting website. Create a website that showcases your resume and all of the work experience you have. You can set out your career objectives and show off any special skills you have. Having your own website is a great way to direct potential employers to where they can find more information about you and is a handy way of getting the message across about skills or achievements you have that may not be right for inclusion on your resume. If all of this sounds like casting the net a little too wide for your tastes, the good news is there are now local job listings websites in most towns. These websites work in much the same way was the larger job hunting websites, but they only list local jobs and only allow local workers to upload their information. Remember that the Internet cuts both ways when looking for a job. Just as you might Google a potential employer, so they may Google you. Be thoughtful about what you post about yourself on the Internet. If you don?t want your potential boss to know about that time you had too much to drink and passed out in your friend?s front lawn, don?t post the picture online. Likewise, be careful when blogging about political, religious or off-color topics. Almost anything you say online can be traced back to you, and may be used against you in a job hunt.
The Ins and Outs of Free Writing Contests (free writing contests) Free writing contests are available by the thousands. They are virtually a dime a dozen on the Internet. No matter what your niche is in the writing community there is a free writing contests out there for you. How do you know which ones to enter and which ones are legitimate? That?s simple. You do what you do best-- research. While providing the story for the free writing contest will probably be the easy part, researching the thousands of available contests will be a daunting task. If this is un-chartered water for you, you have the start at the beginning. Finding what free writing contests are available. Grab a notebook or start a word document and list the contests that are available. Beside each contest name you will want to put what kind of writing they are looking for and when it needs to be done by. By doing this first you will be able to eliminate any that do not coincide with your writing niche or with your schedule. Now the free writing contest research begins. Finding out if a contest is worthwhile and legitimate is comparable to running a background check on a person. First check the contest website. Do they have all contact information available? Do they tell you what company is hosting the contest? If they are not, you will have likely found warning number one that it is a scam. So scratch those off your list or at least move them to the bottom until you can find out more information on them. Start asking around to colleagues and writers groups. Search the writing forums and the Internet scam sites. The Better Business Bureau is also a good place to look. Once you narrowed the free writing contests down to the legitimate ones, read the contest rules and regulations. Some contests require you signing over all rights to a story even if you don?t win. Are you willing to do this? Giving up rights to you writing is a lot easier to do when you are getting something in return. After you enter there is no going back, so make sure this is what you want to do. The final thing you need to look for is if the contest is just a cover up to get you to buy services or products. This does not necessarily mean they are a scam or don?t actually award winners. It simply means that they will try to entice you to use their critiquing services or offer you a book at a reduced fee that your work will be published in. Being published sounds like a great deal but is it a book that carries prestige that people are going to see? Many authors think that writing contests will launch their career into a successful endeavor. This is not the case, especially for free writing contests. Even winning the grand prize of a smaller known contest is not going to affect your literary journey. Even though they may not springboard your career, there are good reasons to join writing contests. You will get unbiased opinions and valuable feedback from the judges. If you make it into the higher rounds, editors could also see your writing. Ultimately whether you enter a free writing contest the choice is yours. Just ask you self if the time spent writing and researching the piece you choose to enter is worth writing for free in most cases. The critique and feedback may be the most worthwhile thing you receive from the contest. But then again the judges opinions are a dime a dozen just like the contests.