Bandwidth: Bandwidth is the capacity that a telecommunications medium has for carrying data. For analog or voice communication, bandwidth is measured in the difference between the upper and lower transmission frequencies expressed in cycles per second, or hertz(Hz). For digital communication, bandwidth and transmission speed are usually treated a synonyms and measured in bits per second.
Client: A Client is a workstation or personal computer in a client/server environment. Or One end of the spectrum in a request/supply relationship between programs.
DS Standard for NDS (Novell Directory Services ): used by network administrators and managers to help plan, implement and manage the Novell Directory Services environment. The Simpson's Network Administrator for Novell NetWare 4.1 includes a limited version - so students can learn to manage a network in a controlled environment.
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Dynamic HTML or DHTML: Dynamic HTML allows the audience to view sites without additional software, which has to be installed in the Web browser (plug-ins), and without additional download time on an already straining modem. DHTML requires the use of one of the latest and greatest Web browsers...namely Microsoft Internet Explorer 4+ or Netscape Communicator 4+. Standard HTML is a combination of different elements, or tags, which are designed to hold data in a certain fashion. Dynamic HTML extends these tags by making "objects" of them, and allowing you to alter the way the data is presented by altering those tag "objects." JavaScript does much the same thing, and is itself used in DHTML to control these tags.
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Netscape Composer: Netscape Composer is a Web page editor that provides an environment similar to a word-processor which Web pages can be created quickly and easily.
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e-commerce: The act of conducting business on-line, e-commerce may include buying and selling products with digital cash and via electronic data interchange.
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Extranet: An extranet is a collaborative network that uses Internet technology to link businesses with their suppliers, customers, or other businesses that share common goals. An extranet can be viewed as part of a company's intranet that is made accessible to other companies or that is a collaboration with other companies. The shared information might be accessible only to the collaborating parties or, in some cases, might be public.
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Firewall: A firewall is either the program or the computer it runs on, usually an Internet gateway server, that protects the resources of one network from users from other networks. Typically, an enterprise with an intranet that allows its workers access to the wider Internet will want a firewall to prevent outsiders from accessing its own private data resources.
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Installation Simulation: Included with Palmer's Hands-On NT Server and Hands-On NT Workstation books, the Installation Simulators are written in Microsoft Visual Basic and simulate the NT installation process without affecting the host computer.
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Internet Explorer (IE): Internet Explorer is Microsoft's Web browser. Like Netscape Navigator, Internet Explorer enables you to view Web pages. The major differences between Internet Explorer and Navigator are: Internet Explorer supports ActiveX and VBScript, while Navigator does not. Internet Explorer runs only under Windows and on Macintoshes whereas Navigator runs on these platforms as well as UNIX. Otherwise, the two browsers are very similar. Both support Java and JavaScript.
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Intranet: An intranet is a network that is contained within an enterprise. It may consist of many interlinked local area networks and also use leased-lines in the wide-area network. It may or may not include connections through one or more gateways to the outside Internet. The main purpose of an intranet is usually to share company information and computing resources among employees. An intranet can also be used to facilitate working in groups and for teleconferences.
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IntranetWare: IntranetWare is Novell's newest generation of the NetWare product, now called IntranetWare (the first version is IntranetWare 4.11), has an intranet/ Internet platform.
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IP address: An IP address is an identifier for a computer or device on a TCP/IP network. Networks using the TCP/IP protocol to route messages based on the IP address of the destination. The format of an IP address is a 32 bit numeric address written as four numbers separated by periods. Each number can be zero to 255. For example, 1.160.10.240 could be an IP address. Within an isolated network, you can assign IP addresses at random as long as each one is unique. However, connecting a private network to the Internet requires using registered IP addresses (called Internet addresses) to avoid duplicates.
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LAN: A LAN is a network of interconnected workstations sharing the resources of a single processor or server within a relatively small geographic area. Typically, this might be within the area of a small office building. Usually, the server has applications and data storage that are shared in common by multiple workstation users. A local area network may serve as few as four or five users or, in some cases several thousand.
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Netscape Communicator: Netscape Communicator is a suite of software components for sharing, accessing, and communicating information via intranets and the Internet. Communicator includes components for navigation, (Navigator), email, (Messenger), discussion groups, (Collabra), HTML authoring, (Composer), dynamic information delivery, (Netcaster), real-time collaboration, (Conference), calendar and scheduling, (Calendar), IBM host communications, and Communicator management.
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NetWare: A popular local-area network (LAN) operating system developed by Novell Corporation, NetWare is a software product that runs on a variety of different types of LANs, from Ethernet to IBM token-ring networks. It provides users and programmers with a consistent interface that is independent of the actual hardware used to transmit messages.
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Pull or Pull Technology: Pull or pull technology refers to requesting data from another program or server. The WWW is based on pull technology, where a client's browser must request a web page before it is sent.
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Push or push technology: Push or push technology refers to sending data to a client without the client requesting it. Information is sent out, regardless of whether anyone is tuned in. PointCast, which delivers customized news to users' desktops, is an example of push technology.
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Router: On the Internet, a router is a device or, in some cases, software in a computer, that directs information packets to the next point toward their destination. The router is connected to at least two networks and decides which way to send each information packet based on its current understanding of the state of the networks it is connected to. A router is located at any juncture of networks, including each Internet point-of-presence.
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Server: A server is a computer on a LAN that provides services or resources to client (stand alone) computers by sharing its resources. Servers may be dedicated, in which case they share their resources but don't use them themselves, except in performing administrative tasks. Servers may also be used to run applications for users, in which case the server is called an application server. Peer-to-peer or workgroup servers, such as servers created by using PCs running Windows NT Workstation to share disk folders, are another class of server.
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TCP/IP: TCP/IP is the acronym for Transport Control Protocol/Internet Protocol, the suite of communications protocols used to connect hosts on the Internet. TCP/IP uses several protocols, the two main ones being TCP and IP. TCP/IP is built into the UNIX operating system and is used by the Internet, making it the de facto standard for transmitting data over networks. Even network operating systems that have their own protocols, such as NetWare, also support TCP/IP.
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WAN: WAN distinguishes the broader telecommunication structure from a local area network (LAN). A wide area network may be composed entirely of private structures, but the term seems to also connote the inclusion of public networks and all kinds of transmission media.
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Workstation: A workstation is a client computer (stand alone machine) on a (Local Area Network) or Wide Area Network that is used to run applications and is connected to a server from which it obtains data shared with other computers. Workstation is also used to describe a high-priced PC that uses a high-performance microprocessor and proprietary architecture to create what some call an "open" system.
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