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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.
Why Time Management Makes for a Better Employee Time management is a major issue in the workplace. When time is not utilized efficiently, it leads to sloppy work, missed deadlines, and way too much stress. Employers are constantly seeking ways to teach their employees to manage their time better for a simple reason ? a team that manages its time well is a team that is productive and successful. Everyone has done it. You?ve know that there is a big deadline approaching for weeks on end, and you kept telling yourself that have plenty of time. Then, suddenly, it is the day before the project is due, and you haven?t even begun it. You know you will have to pull an all-nighter, and even then you will be lucky to get everything done in time. Your heart is racing, your head is pounding, and you?re cursing your procrastination yet again, thinking about how much time you wasted surfing the next when you could have been doing a little work on the project every day, so it wouldn?t be so overwhelming. The end result of a project like this is predictable. You may get it in on time, or at least close to the deadline, but your work is likely to be sloppy. The rush job you did will be evident to everyone, and if your project involved making a pitch to a potential customer, your time management failure may end up costing your company big money (and costing you a job). As if you were not stressed enough already! If you contrast that performance with one in which you had effectively managed your time, the difference is clear. If you have worked on the project over the entire time span you had to finish it, a little bit at a time, then you would have had time to make sure your work was up to par. You wouldn?t have been scrambling for last minute information to include, and you could have made sure your work was free from little errors like typos or pages that printed incorrectly. Most importantly, you wouldn?t feel like you needed a week long vacation when the project was over, because your stress level never would have hit the roof. So, how do you become a happier and more effective employee by managing your time better? The first thing you can do to become an effective time manage is simple ? write yourself a to-do list everyday. Not only does a to-do list help you think through exactly what you need to accomplish so you don?t forget anything in the rush, but it also helps you feel accountable for everything that needs to get done. If you write ?spend 30 minutes on the big project? on your to-do list, it is a lot harder to come up with excuses why you can put it off for another day. Your conscience will make you want to get through everything on that list. If it seems like you never have enough time in the day, keep a journal of all of your activities. If you spend 20 minutes chatting by the coffee pot, write it down. After a week, look back over your activities. You may be surprised how much time you actually spend doing nothing. Now that you know, you can reinvest that time more wisely. The last thing is the hardest thing ? getting over procrastination. This one is sheer willpower. When those voices in your head start arguing over whether to work on something now or put it off until later, listen to the work now voice. Give yourself manageable goals, like working on something for 15 minutes or 30 minutes, to get started. Once you experience the freedom from stress that time management brings, that procrastination voice will be a thing of the past.
International Software Copyright International Software Agreement is a Matter of National Security Is there one governing law concerning international software copyright? According to agreements by the World Trade Organization (WTO) and the Trade-Related Aspects of Intellectual Property Rights (TRIP) any software written has an automatic copyright. This is a pretty conclusive consensus as far as an international copyright goes. The short answer would have been yes, but this was so much more informative. An international software copyright should not however be confused with a patent. Copyrights provide creators with the ability to prevent others from directly copying the code involved. A patent can actually limit the use of the software. Because of this, I'm sure you'll understand that patents are a hotly debated topic when it comes to software. The biggest thing to know about international software copyright is that your code is essentially protected the moment you create it. This is, unless you have some kind of contract through your employer that all code created by your belongs to them (these cases have been known to happen and provide excellent incentives for employees to always read the fine print). The problem that many companies are running into when it comes to enforcing international software copyright is that computers are not permanent fixtures in a company. Computers are rather disposable hardware when it comes to keeping up with evolving technologies and software needs to be updated when new computers are purchased. Rather than purchasing new copies of software when the computers are replaced companies are notorious for reusing old copies of the software. They are also famous for replacing 10 computers with the software installed with 40 new computers and installing the 10 copies of the software on all 40 computers. This is not in keeping with international software copyright. This is stealing and you'd be surprised at some of the good upstanding companies that do this on a regular basis. There really are no major differences between traditional policies for American copyright and international software copyright which makes legal issues, troubles, and woes that much easier to deal with. By having a unified international front thee are ramifications and legal actions that can be taken around the world without going through a great deal of international red tape. If you think dealing with the American government is bad, you should see how much fun it is to deal with the American government and another government for a legal action. The agreement between nations for international software copyright is probably one of the soundest possible decisions that can be made as military secrets of all governments have some degree of software in order to keep them operating. While it isn't quite as simplistic as stealing a computer program to unlock the defense secrets of a nation, having access to certain source codes could be problematic in the absolute best-case scenario. Keeping secrets isn't the only thing that makes this agreement so valuable, it is however, one of the most vital. Perhaps one of the greatest things to come about as the result of the international agreement to protect and honor software copyright is the peace of mind that is available to software developers in America and other technologically advanced countries that their source code won't be allowed to be stolen and used against them at a later date by someone in a developing nation with cheap labor and other overhead costs that American corporations simply cannot compete with. This could be devastating to the economies of technological societies if it were allowed to happen and the agreement for an international software copyright prevents that from being allowed to occur.