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Windows Server® 2008 Administrator’s Companion by Charlie Russel and Sharon Crawford

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IP Addresses and What They Mean

Your IP address is to the Internet (or to the other computers on your local network) what your street address is to your mail carrier. It uniquely identifies your computer by using a simple, 32-bit (or 128 bits with IPv6) addressing scheme. This scheme, which originated in the late 1960s and early 1970s, uses four octets (for IPv4) separated by dots, in the form w.x.y.z. Throughout this appendix, we’ll use these letters to represent each octet—to describe both the network’s address and the local computer’s address on that network. Each octet is represented by a single decimal number but is called an octet because it requires eight bits to describe.

Note

IPv6 addresses use hexadecimal notation, with blocks separated ...

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