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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.
Fair Use Copyright Law Don?t Overstep the Fair Use Copyright Law Many people are interested in the fair use copyright law. The fair use copyright law enables people to use portions of material that is copyrighted for the purposes of criticism or as commentary. The hard part for many people is understanding what is permissible under the fair use copyright law and what is not permissible. Anyone who writes or publishes should brush up on what is allowed and what is not allowed. Using another person?s words to make news reports, to use as a comment or criticism or to use for research, scholarship, or for educational uses that are nonprofit are generally considered fair use. In these instances, the fair use copyright law allows one person or author to make use of another person or author?s work without asking permission to do so. In situations that do not fall within these specifications you are probably violating someone?s copyright if you use their work ? especially if you are using another person?s work for economic or commercial gain. When you are trying to see if you can use another?s words, you should keep a few things in mind. The answer to the following questions will help you gage whether you would be violating a copyright. First, are you transforming someone else?s work or are you copying it? Second, are you going to be making any financial gains from your work that would compete with the original copyright holder? Third, do you have the author?s permission to quote their work? Just because you list the author and give credit to him or her does not protect you from infringing upon someone?s copyright. Fourth, how much of the original author?s work are you using? If you are using a substantial amount of another?s work, you are probably in direct violation of their copyright. Many publishing companies have set rules on how much material they will allow to be quoted in other sources. Some of these ranges start at 100 words or less. However, there are truly no standards to go by, so be careful. You can not assume that keeping your copying fewer than 50 words will allow you to pass under the radar ? especially if the original piece is hovering around 125 words itself! Lastly, what portion of another?s work are you using? If it is the meat of the book and the most important part of the book, you are probably in direct violation of the owner?s copyright. With a little common sense it is not hard to decide if you are violating someone?s copyright. People who are truly interested in staying within the guidelines of the fair use copyright law usually do a good job of doing so. Many people push the fair use copyright law right up to the line, while others will blatantly cross over it without giving a second thought to the repercussions. When these people are summoned to court to answer for their vagrant disregard for the property and copyright of another they are usually sorry. Sorry they got caught! It is very important that people who take advantage of the fair use copyright law are held accountable for their actions. Without accountability many more people would follow in their footsteps and use another?s works as their own.
Free Copyright Music Free Copyright Music Means Deeper Well for Artist Inspiration Free copyright music is often mistaken with domain free music or music in which the copyright has expired. A copyright is in place for the lifetime of the author plus 70 years. If there are more than one writer's for the music, the copyright will be in effect for 70 years after the death of the last surviving contributor. While this rule was set in place in order to ensure that the heirs of the author would also benefit from the royalties after the music's writer or composer was no longer living it is important to remember that these laws are the current laws and music written at different points in time are most likely subject to different copyright laws. When searching for free copyright music it is always a good idea to search through music that is very old rather than focusing your search on more recent musical selections as they will most likely still be under copyright protection. It is important to remember when using free copyright music or public domain music that you must be certain the copy you are using is within the copyright period. Any music that was published before 1922 is public domain music. This does not however include derivatives or new versions of that music which may still be under copyright protection. Finding a copy of the music with the copyright date included, if that date is prior to 1922 is the best route to ensure that you are in compliance with current copyright laws and not infringing on someone else's copyright. It is also important to keep in mind that written music is protected differently than recorded music. Almost every sound recording that has been copyrighted in the United States is protected until 2067. If you absolutely need a sound recording you should either purchase one or make one of your own. There are some free copyright music that will allow free use of the music whether written or recorded, you must be thorough in your search for this music however as it quite rare. Another thing to consider is that copyright laws in the United States are different than they are in other countries and if you wish to use music that is or was under copyright in another country you must follow the laws that apply to the particular piece of music you wish to perform. Free copyright music is available in almost every country and many genres; the trick is in finding great sources where you can easily find this music. There is a project called Mutopia, which operates like project Gutenberg. Mutopia provides free copyright music rather than books however. The Gutenberg project also has a section that is devoted to free sheet music in addition to its wonderful resources for books. Each of these projects provides excellent resources for those who find themselves in need of free copyright music for whatever reason. Whether you are a musician who is seeking inspiration from the music of old or hoping to find a composition, which you can rearrange and make your own, there are many ways in which you can go about achieving your goals that will not violate current copyrights. The key is in learning the laws both where you live and in any countries in which the music you seek to modify. By choosing selectively and listening to your options with an open mind and seeing things with a creative eye, you will find a huge world of opportunity available to you as a musician. Isn't it amazing how free copyright music can have such an effect on your ability to create music that you may someday copyright?
Conducting a Self-Evaluation After Getting Fired Sometimes life is hard and when you get fired, it gets even harder. In a country where employee turnover is high and there are no laws to protect you at your work place, potentially anybody is at risk to be fired. In general, that is true, but companies usually only fire a person that has done his or her job improperly, or is not qualified for his or her job any more. Therefore after you get fired, it is time that you conduct a self-evaluation. First of all, you need to make sure you know the reason why you have been fired. Do not just assume, you know why you have been fired. Make sure that your employer tells you the exact reasons why he has fired you. A self-evaluation as to whether the employer is right and whether you might have to work on yourself can only be done after you know why the company has told you to leave. If it was tardiness and absence of work that has gotten you fired, you need to be self critical enough to see that you need to be on time and be at work every day that you are not taking a vacation day. Keeping a job means playing by the rules and these rules do include times that you have to be a t work if you want to keep the job. When your boss told you, that you are not accomplishing your work or you are not qualified for the position, think back and try to find out why he might have said that. Did you deliver your work on time? Was it correct, mostly without any problems and errors? If that is not the case, then perhaps your boss was right and maybe you were not qualified enough to do the job. It might be that you need some more training or some more classes at the university to be able to do your job right. Or maybe you have just chosen a job that is not for you. When you are conducting that self-evaluation, make sure you are not too hypercritical. If it clearly was your fault that you got fired, you need to improve yourself and the personality traits that have led to the firing. Sometimes even though your boss gave you an explanation why you have been fired, you might not agree with the reason you have gotten fired from your company. Yes, sometimes these reasons might not be right. Since this is a society where anybody can get fired, maybe you have been fired because your boss did not like you and he made up some dubious reason for firing you. This is why you have to conduct a self-evaluation to make sure if what you were told is the truth. A self-evaluation might also lead you to the conclusion that you need to choose a different profession than the one you have been in. Maybe it took to get you fired to ser you in the right direction and at some point in your future you might actually thank that boss of yours that he had fired you. Otherwise you might have never found the job that you were destined for and would have been miserable doing the job you were doing. Unhappy employees are not good for a company and some bosses are good enough to realize that. Whatever the reason is that you got fired, make sure you find the reason and check with yourself how much truth lies within that reason and do you have to change to be a better employee and be able to keep your next job.