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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.

How to Work the Internet to your Advantage in a Job Search Are you on the hunt for the perfect job? If you need a new job and you are spending every day running out and buying a paper and flipping through the classified ads, you are way out of date. The newest way to find a job is to use the Internet in your job search. After all, nearly everything else people do these days is done online, so why not looking for your next job. The best part is that the Internet is much better than the classified ads in your local paper when it comes to finding a job you love. When you search for a job online, you have a world of employment opportunities right at your fingertips. There are many ways you start your search for jobs online. There are several websites that are dedicated just to job hunting. On these kinds of sites, you can search through a database of literally thousands and thousands of jobs until you find some that appeal to you. Most of these websites let you search for jobs using many different criteria, from job location to job field to starting salary to jobs that let you work from home. These websites can be a wonderful way of getting a feel for what kind of jobs are out there and what the going rate of pay is for any job in any industry, and how that pay fluctuates regionally. In addition, these sites are also ideal if you are thinking of moving, and want to move to someplace you can find a job. If you don’t care where you move, you can look for cities where the job market is hot. If you know where you want to move, you can look for jobs in your desired city and get the inside track on the job market from no matter where you are. Additionally, on these job listings websites, you can upload your own resume to the site. That way, you can apply to jobs through the website with the click of a button, and potential employers can find you when they are looking for someone with your skills. Another way you can use the Internet to your advantage when you are hunting for a job is to build your own job hunting website. Create a website that showcases your resume and all of the work experience you have. You can set out your career objectives and show off any special skills you have. Having your own website is a great way to direct potential employers to where they can find more information about you and is a handy way of getting the message across about skills or achievements you have that may not be right for inclusion on your resume. If all of this sounds like casting the net a little too wide for your tastes, the good news is there are now local job listings websites in most towns. These websites work in much the same way was the larger job hunting websites, but they only list local jobs and only allow local workers to upload their information. Remember that the Internet cuts both ways when looking for a job. Just as you might Google a potential employer, so they may Google you. Be thoughtful about what you post about yourself on the Internet. If you don’t want your potential boss to know about that time you had too much to drink and passed out in your friend’s front lawn, don’t post the picture online. Likewise, be careful when blogging about political, religious or off-color topics. Almost anything you say online can be traced back to you, and may be used against you in a job hunt.

Web Hosting - Why Backups Are Essential One thing most web site owners have little time for is... anything! Anything other than focusing on their site content and the business or service it supports and the information it provides, that is. That means that administration often suffers, as it frequently must. There's only so much time in the day. But the one thing that you should never let slide are backups. They are like insurance. You rarely need it (you hope), but when you do you need it very badly. Performing regular backups - and testing them - doesn't have to be a nightmare. A little bit of forethought and effort and they can be automated to a high degree. And, they should be tested from time to time. Even when a backup appears to have gone without a hitch, the only way to know whether it's of any value is to attempt to restore the information. If it can't be restored, the backup is worthless. Even when the web hosting company provides the service, there is still some planning involved for the site owner. Hosting companies often rely on one or both of two methods. They backup everything (called a full backup), then backup anything which has changed since the last full backup (called an incremental backup). Of special interest are any configuration files that have been tailored. If you've modified the default installation of a software package, you want to be able to recapture or reproduce those changes without starting from scratch. Network configuration files, modifications to basic HTML files, CSS style sheets and others fall into the same category. If you have XML files, databases, spreadsheets or other files that carry product or subscriber information - about items purchased, for example, or people who signed up for a newsletter - those should get special attention, too. That's the lifeblood of your business or service. Lose them and you must start over. That can break your site permanently. It should go without saying that all HTML and related web site files that comprise visible pages should be backed up regularly. It isn't necessary to record every trivial change, but you can tailor backup software to exclude files or folders. Usually they're so small it isn't worth the trouble. But in some cases those small changes can add up in scenarios where there are many thousands of them. Here again, the backups are worthless if they can't be used. Even if the hosting company charges for doing so, it's worthwhile to test once or twice a year at least to ensure the data can be restored. That's especially true of database backups, which often involve special software and routines. Database files have a special structure and the information is related in certain ways that require backups be done differently. Developing a backup strategy can be straightforward. Start simply and review your plan from time to time, modifying it as your site changes and grows. But don't neglect the subject entirely. The day will come when a hard drive fails, or you get hacked or attacked by a virus, or you accidentally delete something important. When that day comes, the few minutes or hours you spent developing and executing a backup plan will have saved you days or weeks of effort.