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Web Hosting - The Internet and How It Works
In one sense, detailing the statement in the title would require at least a book. In another sense, it can't be fully explained at all, since there's no central authority that designs or implements the highly distributed entity called The Internet.
But the basics can certainly be outlined, simply and briefly. And it's in the interest of any novice web site owner to have some idea of how their tree fits into that gigantic forest, full of complex paths, that is called the Internet.
The analogy to a forest is not far off. Every computer is a single plant, sometimes a little bush sometimes a mighty tree. A percentage, to be sure, are weeds we could do without. In networking terminology, the individual plants are called 'nodes' and each one has a domain name and IP address. Connecting those nodes are paths.
The Internet, taken in total, is just the collection of all those plants and the pieces that allow for their interconnections - all the nodes and the paths between them.
Servers and clients (desktop computers, laptops, PDAs, cell phones and more) make up the most visible parts of the Internet. They store information and programs that make the data accessible. But behind the scenes there are vitally important components - both hardware and software - that make the entire mesh possible and useful.
Though there's no single central authority, database, or computer that creates the World Wide Web, it's nonetheless true that not all computers are equal. There is a hierarchy. That hierarchy starts with a tree with many branches: the domain system.
Designators like .com, .net, .org, and so forth are familiar to everyone now. Those basic names are stored inside a relatively small number of specialized systems maintained by a few non-profit organizations. They form something called the TLD, the Top Level Domains. From there, company networks and others form what are called the Second Level Domains, such as Microsoft.com.
That's further sub-divided into www.Microsoft.com which is, technically, a sub-domain but is sometimes mis-named 'a host' or a domain. A host is the name for one specific computer. That host name may or may not be, for example, 'www' and usually isn't. The domain is the name without the 'www' in front. Finally, at the bottom of the pyramid, are the individual hosts (usually servers) that provide actual information and the means to share it.
Those hosts (along with other hardware and software that enable communication, such as routers) form a network. The set of all those networks taken together is the physical aspect of the Internet.
There are less obvious aspects, too, that are essential. When you click on a URL (Uniform Resource Locator, such as http://www.microsoft.com) on a web page, your browser sends a request through the Internet to connect and get data. That request, and the data that is returned from the request, is divided up into packets (chunks of data wrapped in routing and control information).
That's one of the reasons you will often see your web page getting painted on the screen one section at a time. When the packets take too long to get where they're supposed to go, that's a 'timeout'. Suppose you request a set of names that are stored in a database. Those names, let's suppose get stored in order. But the packets they get shoved into for delivery can arrive at your computer in any order. They're then reassembled and displayed.
All those packets can be directed to the proper place because they're associated with a specified IP address, a numeric identifier that designates a host (a computer that 'hosts' data). But those numbers are hard to remember and work with, so names are layered on top, the so-called domain names we started out discussing.
Imagine the postal system (the Internet). Each home (domain name) has an address (IP address). Those who live in them (programs) send and receive letters (packets). The letters contain news (database data, email messages, images) that's of interest to the residents.
The Internet is very much the same.
Yes, Freebies are Real! If you tell someone that something is free, they immediately start looking for the catch. After all, the words of wisdom “there is no such thing as a free lunch” have usually been proven true for people time and again throughout life, and so a healthy cynicism towards free stuff usually springs up with good reason. If you are one of these skeptical types, however, you may be missing out on some really great stuff. The truth is that you CAN get free things that are really and truly free, and yes, actually worth having. You just have to know where to look. OK, here is where the caveat comes in. The definition of “free” often depends on the definition of “cost.” As any economist can tell you, cost really doesn’t only come down to how much money you have to hand over to get something. There are additional costs, like inconvenience and time spent doing something. And true, some freebies have these “non monetary” kinds of costs associated with them. You have to balance all of the costs with the value of the free stuff you are getting and decide if it is worth it to you. The two biggest costs associated with freebies? Time and convenience are at the top of the list. Time is a big factor in many free offers. Companies want a bit of your time in exchange for their free products. Indeed, some companies literally want hours of your time. Have you ever taken advantage of one of those “free weekend vacation” offers in which you received free accommodation in a beach house or condo for a weekend in exchange for suffering through a long presentation and intense sales pitch? For some people, they can handle the presentation and have no qualms about refusing to buy anything and the free vacation more than makes up for it. Other people would rather pay any price to avoid having to listen to one of these spiels. So, while these weekends are freebies, for some people, they cost too much. More often, a company wants your time in a less obvious way – they want you to spend time filling out forms. These forms may simply be your name, address and email address, or they may be very lengthy, quizzing you about buying habits and the like. The reason the companies want you to do these forms is often for market research, and they are more than happy to give you a freebie in exchange for this. Many people find the time spent filling out these forms will worth it to get a great free product. Convenience is the other cost involved with many freebies. Time and convenience go hand in hand in some cases – after all, it may not be especially convenient to fill out form after form simply because it is time consuming, but convenience takes another hit from freebies in the form of spam email. Often, signing up for a freebie can land you on a spam email list, and for some people, getting tons of spam is so inconvenient that they would rather pay full price. The truth about all of these costs of freebies is that the freebie is in the eye of the beholder. You have to decide what you are willing to put up with in order to get a free product. Once you know the limits to your freebie costs, than you can cash in on some really great products that don’t cost you a dime. When you spend five minutes filling out a form and get rewarded with a free DVD player that you have been wanting, you will realize that there are free things out there to be had. Copyright law Understanding Copyright Law Copyright law is a set of laws that is used to regulate things such as movies, plays, poems, musical compositions, drawings, paintings, sculptures, software, photographs, sculptures, literary works, choreographic works, radio broadcasts, televisions broadcasts and more. Copyright law is only regulated to cover the manner or form in which the information or material is expressed. For instance, it does not cover the idea or facts which are represented in a work. In instances where a copyright does not exist, patents or trademarks may be in place which can impose legal restrictions. Copyright law states that the holder of the copyright has the right to make copies or reproduce the work to sell. They can also export or import the work, create derivative or adaptation of the original work, display or perform the work publicly and assign or sell the rights to someone else. Copyright law is set up to protect people from having someone do something with their copyrighted work or material. Someone that has a copyright may choose to exploit their copyrighted work, or they may choose not to. Many people debate whether copyright law and copyrights are moral rights or merely property rights. It is important to note that in the U.S. copyright law covers protection for published and unpublished works. Copyright law protection covers a work from the time it is created in a tangible form. The author or creator of the work immediately holds the copyright to the work and it is the property of the author or creator. No one else can claim copyright to it, unless the original copyright holder (the author or creator) gives or sells the rights to another person. Many people fail to understand that merely owning or possessing a work does not give them the copyright to it. Just because you have ownership of a copyrighted work does not mean that you own the copyright. Likewise, if you copy someone’s work and list their name on it, you are undertaking copyright infringement. Many people also fail to understand when copyright protection is secured. The moment a work is written or created and it is in physical tangible form or recorded it falls under copyright law. While it is recommended to register your work through the Copyright Office, if your work is not registered and someone steals your work, they have violated your copyright. Using a copyright notice is not required by law. However, many recommended that the copyright notice or symbol be used so remind the general public that the piece is under copyright. Anything that is created after 1977 is protected by copyright law for the lifetime of the author of the creator, plus an additional 70 years after the creator’s death. The public domain is a good source of information that is no longer under a copyright or work that was never under a copyright to begin with. Virtually all works that were created or published in the United States prior to 1923 are said to be in the public domain. Things that can be found in the public domain that are free of copyright law generally include generic facts and information, works that have a lapse in their copyrights (this encompasses works that were created prior to 1978) and materials and information put out by the United States government. In addition, you may find works in the public domain that are free of copyright law because it has been dedicated to the public domain. |