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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: 209.131.36.158 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.

Keeping your Career Intact During Maternity Leave Since, for the most part, maternity leave in this country is not paid, the reality of returning to work after having a baby comes much sooner than it does in most countries. No one wants to return to absolute chaos after they have the baby. Cut down on the stress of going back to work by being prepared. The length of your maternity leave can determine the amount of stress you return to. If you are willing and able it is a good idea to work as long as possible. Of course, everyone is not willing and able. For those that need a longer leave, they should put some plans in place to make the transition back to work smoother. How long you are on maternity leave varies. However, if you plan on returning after you have the baby, you do not want to return to a totally chaotic situation. That means that you want to have the needs of your career in tact before you take your maternity leave. Nothing should interfere with your new addition to the family. While you are bonding and spending time with your newborn you do not want the stress of the office hanging over your head. Lay the ground work so that you do not have to worry about the office while you are away. If you are the boss, you have a lot more stress to manage. It is important that you leave a responsible and capable person in charge of things in your absence. Start training that person to deal with the aspects of your job that they will have to handle as soon as you know you are pregnant. Nothing is more annoying than getting “How do I…” phone calls when you are on maternity leave. If your job is massive, split the responsibilities between two employees. You do not want to split up the tasks among too many people because this can lead to confusion. Two should be the maximum. Be sure to leave things in order. If you are not the most organized person, get that way when you find out you are pregnant. While you are on maternity leave anyone should be able to walk into your office and find what they are looking for in a very short amount of time. If things are messy there is more of a chance for things to go wrong. If you are one of those women that needs to have an extended maternity leave because of pregnancy complications, don’t fret. Enjoy your time offer and relax but also, if you can, try to stay on top of what is happening in your career field. Take an online class and brush up on skills. If you are not sure you want to return to your 9-5, research a new career. The Internet has made working from home a very real and popular option. Search for a job that will allow you to stay at home but also bring in some income. Some jobs, such as Computer Programming, can fetch a pretty penny. Do some research and find out what will suit you best. Work part time until you are ready to have the baby. While some women are eager to take their maternity leave, others are not so excited about it. If that is the case, talk to your employer about working part time until you are due. Some women work until they go into labor. There is no need to do that if you are uncomfortable but if you are having an uneventful pregnancy and love your job, why not?

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.