By Cricket Liu
This publication will get very indepth approximately DNS. it truly is dry and intensely technical making it a troublesome and uninteresting learn. i do not suggest this ebook for the beginner. you actually must have a few basic wisdom concerning the topic sooner than purchasing this book.
The factors through the booklet are tough to keep on with and will be complicated. it will probably of been higher written with a simplified approach.
After studying this ebook I now notice how uninteresting DNS quite is.
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Extra resources for DNS on Windows Server 2003
There are dozens of registrars for com, net, and org, including Network Solutions—a former subsidiary of VeriSign. An organization called EDUCAUSE runs the edu registry and is its only registrar. But before we get too off-track, let's get back to our story. 2 Where in the World Do I Fit? If your organization is attached to the Internet outside of the United States, you first need to decide whether you'd rather request a subdomain of one of the generic top-level domains, such as com, net, and org, or a subdomain of your country's top-level domain.
Maybe you have several dozen Ethernet segments connected via routers, for example. If your internet is basically homogeneous and your hosts don't need DNS (say they don't run TCP/IP at all), you may be able to do without it. But if you've got a variety of hosts, especially if some of those run some variety of Unix, you'll want DNS. It'll simplify the distribution of host information and rid you of any kludgy host-table distribution schemes you may have cooked up. 3 If You Have Your Own Local Area Network or Site Network .
One is on PSINet, a commercial Internet backbone; one is on the NASA Science Internet; two are in Europe; and one is in Japan. Being the focal point for so many queries keeps the roots busy; even with 13, the traffic to each root name server is very high. A recent informal poll of root name server administrators showed each root receiving thousands of queries per second. Despite the load placed on root name servers, resolution on the Internet works quite well. Figure 2-12 shows the resolution process for the address of a real host in a real domain, including how the process corresponds to traversing the domain namespace tree.