Introduction

Artwork Symbols

Table I.1 contains the artwork symbols used in this volume. You can use it as a resource as you study the diagrams in this guide.

Table I.1 Artwork Symbols

Meaning	Meaning	Meaning
Access token. An object that contains user information and is used for security purposes.	Automated Library. Tape/disk libraries that contain a collection of media and one or more drives.	Client. A computer that accesses shared network resources provided by another computer.
Cluster. A group of independent computers that works together as a single system.	Database. Any collection of data organized for storage and access by computers.	Document. Any self-contained piece of work created with an application program and saved on a disk.
Domain. In Windows 2000, a collection of computers defined by the administrator that share a common directory database.	E-mail. The exchange of text messages and computer files over a communications network.	Failure. The inability of a computer system or related device to fail gracefully over a period of time.
File Folder. A directory or subdirectory.	Firewall. A piece of a security system used to prevent unauthorized access to a network.	Generic Server. A computer running administrative software.
Hard Disk. A device used for storing data magnetically.	Host. The main computer in a system of computers or terminals connected by communications links.	Host. The main computer in a system of computers or terminals connected by communications links.
I/O Filter. A series of definitions that indicate to a router the type of traffic allowed on each interface.	Internet. Refers to the worldwide collection of networks that communicate with each other.	Laptop or Portable Computer. A small, portable personal computer.
Macintosh Client. A networked personal computer manufactured by Apple Computer Corporation.	Mainframe Computer. A high-level computer designed for the most intensive computational tasks.	Mainframe Computer. A high-level computer designed for the most intensive computational tasks.
Mixed mode domain. A mode in which Windows 2000 and Windows NT domain controllers coexist in a domain.	Modem. A communications device that enables a computer to transmit information over a standard telephone line.	Modem Bank. A collection of modems connected to a single server.
Network Adapter. An expansion card or other device for connecting a computer to a local area network.	Organizational unit. A structure within a domain.	Organizational unit. A logical container holding users, groups, computers, and other organizational units.
Packets. A network transmission unit of fixed maximum size.	Printer. A print device that is directly connected to your network.	Remote Access connection. A dial-up connection between servers, domain controllers, and sites.
Root. The highest or uppermost level in a hierarchically organized set of information.	Router. An intermediary device that directs and optimizes network traffic.	Security Key. A security descriptor that contains the local security policy, such as specific user rights.
Server Farm. A group of servers that provides services to the network.	Site. One or more well-connected TCP/IP subnets.	Steelhead router. A computer acting as an intermediary device on a communications network.
Switch or Gateway. A device connecting two networks that is capable of passing or blocking packets.	Tape or Tape Backup. A tape cartridge format used for data backups.	Tape Drive. A device for reading and writing tapes.
Terminal. A device consisting of a video adapter, a monitor, and a keyboard that does little processing on its own and is connected to a computer via a communications link.	Tunnel. The logical path by which the encapsulated packets travel through the transit internetwork.	Windows NT domain. A networked set of computers that runs Windows NT 4.0, that shares a SAM database, and that can be administered as a group.
Windows 2000 Server. A server that provides centralized management on the network.	Uninterruptible power supply. A device between a power source and a computer that ensures electrical flow is not interrupted.