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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.
Great Sources for Free Games on the Internet The Internet is a great source for games, especially of course computer games. Computer games are the biggest hit since they are invented and every year thousands of PC games flood the market. Some of the computer games actually are so expensive that many parents cannot afford them for their children and are looking for alternatives that their children can play. There are actually a vast number of games that are available for free through the Internet and in some cases even as a CD. Freeware, shareware, trial products and even full version of prototypes are available on the Internet. Many pages on the Internet actually specialize in offering freeware or shareware programs. Hobbyist programmers usually write shareware and freeware programs and other programmers, who want to give something back to the community. These programs are not always working one hundred percent and most often there is also no real support for all the programs, but they are free. Freeware in general is a free program that has a copyright. The program is made available free for use, but it cannot be changed or used for development by other developers. Shareware programs are often only free for certain periods of time. After that period the user has to pay for using the software. Shareware programs are a marketing method of big computer firms. It is the try before you buy strategy that is used here. Some companies will offer the full version of the program for 30 days for trial, while others offer a version of the program with reduced functions to give the user a taste and to lure the user to buy the product if he wants to use the rest of the functions. Even thougfh both freeware and shareware are often callled free software, free software is something completely different. Free osftware are programs that are available for free, but generally are also avialble for others to study the code, change and modify or even use the code as a base for their development. In any way, these three major types of free game software can be found on the Internet along with such things as online games. Some of the games can be plauyed online. Evne though the userm ight not own the software, the games can be played for free anytime. The only thing that most of those free onlin game pages require is to sign up to their page for free. For younger hcildren, many of the educational sites offer free preschool and early childhood computer games, that teach children, the shapes, colors, vocabulary, counting and much more. With parental sucpervision such activities are safe for children and can enhance the learning process. Other pages offer free games for older chidlren and adults. While many parents do not constantly check on their chidlren while they are on the itnernet, it is important to keep up to date on their youngsters Internet activites. Many pages are completely safe, but sometimes advertisement to found the free software can be dangerous for young, innocent eyes. For adults, there are even more choices in free games. There are whole communities of gamers, that are connected throughout the world for vieosgaming sessions. Anything form cardgames to wargames can be played for free in some of those communities. All one needs might be a free membership sign up to the web page or the community. All of these sources for games can be found easily by typing the words freeware, shareware, online games into any of the major search engines. But as always, do it with cuation, conisdering the many viruses and spyware programs that aare out there in cyberspace. The Business of Self-Publishing (self publishing) Self-publishing has become a common practice for many writers. Writers’ reasons for self-publishing are varied, but it is commonly known that many writers want the accolades of having published work, no matter who publishes it. The freedom and business aspects of publishing work independently are desirable to many writers. A self-published writer is one who is in control of every aspect of their published work. The term self-publishing is defined as the publishing of books and other media by the authors of those works, instead of being established by third-party publishers. The advancement of technology has caused an increase in the self-publishers world, but it still only represents a small percentage of the publishing industry in terms of sales. The proliferation of media channels and web logging has contributed to the increase in self-publishers. The business of publishing books and other media independently is one that is unique and different from any other business. The most distinguishing characteristic of self-publishing is the absence of a traditional publisher. The author of the content takes on the role of the traditional publisher. The author is given editorial control of the content, arranging for printing, marketing the material, and distributing the material to consumers and retailers. The published books may be printed on demand with no inventory, which places a large amount of financial risk for the venue on the author’s shoulders. Many self-published authors end up subsidizing their work rather than making money from it. Digital printing technology has made it possible for the self-publishing concept to become mainstream in digital photo book printing. Self-publishers are able to get individually printed photo books from firms like Apple’s iPhoto, FotoInsight, Snapfish, and Printing-1. The motives for publishing work independently are varied, and there are numerous reasons for choosing to self-publish. One common reason is that the work of the author is not of interest to the commercial publisher, and otherwise not marketable. Some other common reasons for self publishing include an author’s preference to retain complete editorial control over content. Many writers are unwilling to compromise when it comes to the editing of their work, and some prefer to have their work presented “as is.” Writers may also be denied publication because they are unknown and don’t have a substantial resume. Self-publishing may also be an alternative for writers who have written material on a popular topic but that is only of interest in a small geographic area. Topics that address an obscure topic in which few people are interested may also be denied publication by commercial publishers. Writers of controversial works may also choose to self-publish, as many traditional publishers refuse to work with controversial writings. There are also some authors choose self-publishing because they want a larger percentage return from retail sales. Whatever the reason for self-publishing, authors should know that there is extensive work required in publishing a book alone. Publishing alone involves a long list of tasks, which include prepublication and publication. Prepublication includes editing or obtaining editing for the manuscript, proofreading, establishing yourself as a legal retail business, and obtaining an ISBN “Cataloging in Publication” number. The publication process involves formatting the manuscript, providing front matter and back matter, and providing cover art for the front and back covers and the spine of the book. Self-publishers must also obtain printing quotes, determine how the manuscript will be delivered to the printer, and pay for printing and delivery of finished books. Self-publishing is a business that many writers prefer to avoid, but for others it may be the only way to have the work printed and available to the public. |