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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.
Highlights for Free Stuff for Educators Everybody knows that teachers work hard for little monetary compensation. Fortunately, there are many fine resources available that allow educators access to free stuff. Who deserves free stuff more than our teachers? If you are a teacher searching for the best of what the web's freebies, here are some places that offer freebies just for educators. Teaching Education Aid Available for Free There are many websites on the World Wide Web that offer totally free educational and teaching aids. If you teach younger students, you can find great coloring pages. You can also find several teaching aids, including alphabetical pages. Why spend money on expensive preprinted alphabets? You can gain easy access to your own free alphabet pages. Print them out, color them and seal them to make them last. This is an easy way to put together very elemental packets and gain access to fun activity pages. There are many fine teacher resources available for free on the World Wide Web. Here are even more resources for finding great and free resources for educators of all stripes. Getting Access to Free DVDS for Educators Did you know that you could get access to free educational DVDs? Izzit.org offers you a free DVD on your birthday (or another day of your choosing). This offer is limited to teachers of grades 6-12. This website also offers educators discounts on educational DVDs as well as coupons for free ice cream. Gaining Free Nutrition Educational Materials If you are an educator seeking out free nutritional materials, you are in luck. The Dole Corporation is currently offering free educational materials to teachers. Their 5 a Day program offers free downloadable teaching materials. You can also request professional teaching materials by using mail and fax. Simply request your free nutritional materials on your school's official letterhead. Free Computer Tools for Educators If you need access to free teacher tools, Microsoft Office has got you covered. Microsoft is currently offering free learning essentials that can help you create handouts, compose tests, and make presentations and other educational content. You will need a registered copy of Microsoft Office 2002 or 2003 that runs on Windows XP and Windows 2000. Need Teaching Aids for Your Classroom? If you are looking for free teaching visual aids, there are many nonprofits that can provide you with such aids. The Human Genome Project offers educators free posters. Although this promotion is directed specifically to educators, anyone can take advantage of this great offer. The National Institute of Drug Abuse also offers free visual teaching aids. These are great to hang in the classroom. You can order multiple copies directly form the National Institute on Drug Abuse. The USEPA is another organization that offers educators a variety of free posters, as well as other teaching materials, including activity books, CD-ROMs, lesson plans and more. Keep Your Classroom Safe With Free Cleaning Aids Keeping the classroom clean is one of the biggest challenges of any educator. The Clorox Company is trying to make it easier on teachers by offering them a free "Clean Up the Classroom" multimedia kit aimed specifically at classroom educators. The free kit comes loaded with a poster, a cleaning guide and DVD. You will also get a free canister of handy Clorox Disinfecting Wipes. Get Free Magazine Subscription Offers Educators have access to many free magazine subscription offers. Yes Magazine is offering educators a free one-year subscription. This is a magazine published by the Positive Futures Network. This is non-profit organization that helps promote social change to a more compassionate and sustainable world. Take advantage by contacting the magazine for your free educator subscription.
Make Allies in the Workplace to Boost your Own Employee Status A pleasant work environment can go a long way. Having allies in the workplace that work with you, opposed to against you, can create an enjoyable calm at your place of employment. While everyone is not going to be best friends in the workplace, the ability to get along is very important. This can be more challenging with some people than others. However, typically when there is a real bad apple in the mix, they tend to weed themselves out with complete alienation. With that in mind, make allies with as many of your co-workers as you can. A healthy work environment makes the actual work go much smoother. If you want to gain allies at work treat everyone with respect. Employees that are known for their fairness and respect for others are the ones that people trust. If something goes wrong on the job, the boss and other employees know that they can get the right version of the situation from the employee that is kind to everyone. You do not have to like people to be kind to them. Co-workers that you do not like personally should be the ones that you greet and discuss work issues with. Other than that, you want to steer clear of your least favorites. The same is true for bosses that are on your least liked list. Simply limit contact to business material and you will cut down on the chances of having altercations. Nothing ignites work hostility more than employees that do not do their share of the work. If you want to have allies in the workplace, be sure that you are doing your job. You will not have to force the issue if you are doing what you are supposed to do. Your co-workers will like having you around and will be pleasant if you are completing the work you need to do. Don?t gossip. This is one of the major ways to create dislike in the workplace. Spreading rumors, or even truths that were confessed behind closed doors can keep the office on edge. If you are the confidant of someone at work, do not take the information they have shared with you and share it with others. If co-workers come to you and bicker about one another, do not chime in. If they are complaining to you about someone, they are complaining about you to someone else. Politely listen and move on. Remember your manners. Sometimes things get hectic at work and we forget our manners. We find ourselves in a hurry, throwing reports at the secretary or interrupting someone?s phone conversation. Try to compose yourself and be polite. Do not forget your manners simply because you are at work. Put forth extra effort to get along with your co-workers that are not easy to get along with. Personalities are going to be in conflict occasionally. There is nothing wrong with being opposed to someone and their views of the world. However, if they are your co-worker or boss, you need to not let that get in the way of you communicating with them. Allies do not have to necessarily be friends. Instead they should be people that are aligned with you because of the job you do and the way that you treat people. Employees that are able to form alliances at work will have a much easier time getting through the day. Also, if something happens on the job and you need help, co-workers will be much more willing to help out if you are someone who is well liked. With that in mind, it is worth your effort to try to gain allies at work.
Can Job Sharing Boost your Employee Profile? Job sharing is one of the newer occurring work arrangements on the job market. It means that two or more people share one full time position. Most often it is two people that work part time on the same position. This kind of work sharing is a great invention for all parents that want to spend more time with their children or for people that are just not made for a full time job. Job sharing is a flexible job option that shares one person?s responsibilities between two people. So, can job sharing boost your employee profile? Yes, of course is the answer to that. The reasons why job sharing boosts your employee profile are widely spread. Job sharing can bring benefits not only to employees but also to employers and companies. Start by looking at the aspect of sharing your work. If you are sharing a full time position load with another person, pressure is less on you. You still have the same deadline, but the pressure is shared and you can work more efficiently on your work assignments. Less stress makes for a happier more relaxed employee that can tackle the work given to him or her easily. This makes the employee a more balanced person. The possibility to stay at home while still having a chance to be part of a company can further your career and keep your skills up to date and this makes for a well balanced worker. Another reason why job sharing might boost your employee profile is that two people working part time actually can get more work done as one full time employee. Why is that? Well, that is very easy. While the full time employee is very tired in the mid afternoon from his already long day, the person coming in for the second half of the day has had time to relax all morning long and therefore can start with new end fresh energy and thoughts on the shared work. Should the position not be shared in half days, but in each taking a few full days, then the people sharing the position are still more relaxed and motivated. They are able to be with their family, able to rest and regenerate or have fun with some of their favorite hobbies. Psychologists and researchers have long praised the effect that a fun family filled time and enough time to be you and relax can boost your employees? work input as well as their efficiency. In countries where employees have fewer hours per week and more vacation days a year, the work output per person is in general higher and employees are happy and motivated and stay with their company for long periods of time, if not all the way up to retirement. Additionally, if you have a good amount of time off from work, you are most likely a very motivated and happy employee and your boss and fellow employees will see you as a positive person to be around at the work place. Being a leader and motivator is all that a boss can hope for and therefore, sharing the position can immensely boost your profile. For employers, there is also the consideration of your benefits. Some companies might not pay benefits to part time employees and two part time positions will save you money. In this case, your profile is simply boosted by the fact that your employer saves money. Although in some companies, there are benefits for part-time employees and those can be based on different facts, such as hours worked, full-time benefits and more. Before considering sharing your job and entering the world of part-time employment, make sure that this is exactly what you are looking for in a job. Once you are sharing your position, there might not be a way back to full time, at least not within your own company.