IIS - Internet Information Server
Microsoft's Web server that runs on Windows NT platforms. IIS comes bundled with Windows NT 4.0; Because IIS is tightly integrated with the operating system, it is relatively easy to administer. Currently IIS is available only for the Windows NT platform, whereas Netscape's Web servers run on all major platforms, including Windows NT, OS/2 and UNIX.
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Internet Backbone
This fast network spanning the world from one major metropolitan area to another is provided by a handful of national Internet service providers (ISPs). These companies and organizations use connections running at approximately 45 MB per second (T3 lines) linked up at specified interconnection points called national access points. Local ISPs connect to this backbone through routers so that data can be carried though the backbone to its destination.
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Internet Protocol (IP) Address or IP Number
Sometimes called a dotted quad, the IP address is a unique number used to identify a machine on the Internet. The number consists of four numbers between 0 and 255 separated by dots (208.233.88.55). Every machine on the Internet must have it's own IP address. Domains are tied to name servers, which direct to which IP address the domain should point.
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Internet Security
Information traveling on the Internet usually takes a circuitous route through several intermediary computers to reach any destination computer. The actual route your information takes to reach its destination is not under your control. As your information travels on Internet computers, any intermediary computer has the potential to eavesdrop and make copies. An intermediary computer could even deceive you and exchange information with you by misrepresenting itself as your intended destination. These possibilities make the transfer of confidential information such as passwords or credit card numbers susceptible to abuse. This is where Internet security comes in and why it has become a rapidly growing concern for all who use the Internet.
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InterNIC - Internet Network Information Center
A repository of information about the Internet. It is divided into two parts: directory services, which is run by AT&T in New Jersey, and registration services, which is run by Network Solutions in Virginia. It is funded partially by the National Science Foundation and partially by fees that are charged to register Internet domains. This is the place where you register URLs or Domain Names like www.netlingo.com and it basically involves a fee and several forms (some very technical), to set up.
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Intranet
A private network inside a company or organization that uses the same kinds of software that you would find on the public Internet, but that is only for internal use. As the Internet has become more popular, many of the tools used on the Internet are being used in private networks, often in the form of Web servers that are available only to employees. Note that an "Intranet" may not actually be an Internet; it may simply be a network.
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ISDN - Integrated Services Digital Network
ISDN is a set of communications standards allowing a single wire or optical fiber to carry voice, digital network services and video. ISDN is intended to eventually replace the plain old telephone system (POTS). ISDN was first published as one of the 1984 ITU-T Red Book recommendations; the 1988 Blue Book recommendations added many new features. ISDN uses mostly existing Public Switched Telephone Network (PSTN) switches and wiring, upgraded so that the basic "call" is a 64 kilobits per second, all-digital end-to-end channel. Packet and frame modes are also provided in some places.
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