T-connectors — connectors used to join thin Ethernet cable section. The connectors also have a connector that is attached directly to a station.

Tabs — Tabs separate different sections of a dialog box, like cards within a card file.

Tap — A device in the feeder cable that connects a device to a network.

Tape set — A tape set (sometimes referred to as a tape family) in Windows NT Backup is a sequence of tapes such that each tape is a continuation of the backup on the previous tape. See also backup sets; backup types.

Target — The server or a workstation in a network which data is restored to or backed up from.

Target Server — The server that is backed up by the host server. This term is used with SBACKUP.

Task list — A window that shows all running applications and their status. View the Task list in the Applications tab in Task Manager.

Task Manager — A Windows NT component application that allows you to manually view and close running processes. Task Manager enables you to start, end, or run applications, end processes (either an application, application component, or system process), and view CPU and memory use data. Task Manager gives you a simple, quick view of how each process (application or service) is using CPU and memory resources. (Note: In previous versions of Windows NT, Task List handled some of these functions). To run Task Manager, right-click on the toolbar and then click Task Manager or press [Ctrl]+[Alt]+[Del]. Windows 95 has a similar but more limited Close Program dialog box that allows you to terminate programs..

TCNS — Thomas Conrad Network System.A high speed derivation of standard ARCnet. It uses the same coax cable (RG-62 A/U) and provides speed up to 100 Mbps.

TCP — Transmission Control Protocol. A full-duplex, acknowledged, connection-oriented, flow-controlled, Transport layer protocol. TCP uses IP to move the packets (segments) through the networks with the help of service addressing (each virtual circuit is assigned a connection ID referred to as a port number), segmentation, and error checking.

TCP/IP — Transmission Control Protocol/Internet Protocol. A networking protocol that allows computers to communicate across interconnected networks and the Internet. Every computer on the Internet supports TCP/IP.

TCPCON.NLM — Utility used to access TCP/IP Management Information Base (MIB) of any SNMP agent on NetWare network and to access/modify some of the configuration parameters that can be set by INETCFG.NLM.

TDI — See Transport Driver Interface.

TDM — Time Division Multiplexing. TDM is possible when the achievable bandwidth of the medium exceeds the data rate of digital signals to be transmitted. Multiplexed digital signals (or analog signals carrying digital data) can be carried on a single transmission path by interleaving portions of each signal in time.

Telephony application program interface (TAPI) — A set of calls that allows applications to control modems and telephones, by routing application function calls to the appropriate "service provider" DLL for a modem

TELNET — Telecommunication Network. The standard interactive login protocol in the Internet suite of protocols which operates over the TCP/IP protocol. TELNET provides remote host access and terminal emulation. It allows users to access host-based applications over the network via a PC in terminal emulation mode. It is essentially a terminal application that allows a user to log into a multi-user UNIX computer from any computer connected to the Internet.

Template accounts — Accounts which are not actually used by real users but serve as a basis for the real accounts (for administrative purposes).

Ten Base2 — 10Base2 (Thin-Ethernet).An inexpensive Ethernet standard which uses thin coax cable with bus topology and offers 10 Mbps speed. Maximum segment length is 185 meters.

Ten Base5 — 10Base5 (Standard Thick-Ethernet). A type of Ethernet using thick coax cable with bus topology. It supports a data rate of 10 Mbps and a maximum segment length of 500 meters.

Ten BaseT — 10BaseT (Twisted Pair Ethernet). A type of Ethernet which offers a modular approach to the construction of a LAN. It uses inexpensive unshielded twisted pair cable and provides 10 Mbps speed.

Terminate-and-stay-resident program (TSR) — A program running under MS-DOS that remains loaded in memory even when it is not running so that it can be quickly invoked for a specific task performed while any other application is operating.

Test & Tools — A module of Check It Pro. It is a diagnostic tool which tests system boards, memory hard drives, floppy drives, video adapters, serial and parallel ports, keyboards, mouse devices, and printers.

Text box —You use text boxes to type information, such as file names and numbers, into a dialog box. You can edit the text within a text box the same way you edit text in Windows applications.

Text file — A file containing text characters (letters, numbers, and symbols) but no formatting information. A text file can be a "plain" ASCII file that most computers can read. Text file can also refer to a word-processing file. See also ASCII file.

Text-file transfer — A method for transferring files from HyperTerminal to a remote computer. With this method, files are transferred as ASCII files with minimal formatting characters, such as linefeeds and carriage returns. All font-formatting information is removed. See also ASCII file.

Text-only — An ASCII file that contains no formatting. See also ASCII file.

TFTP — Trivial File Transfer Protocol. used on computers running TCP/IP, TFTP quickly sends files across the network with fewer security features than FTP.

The Ency of Hard Drives — The Encyclopedia of Hard Drives. A publication of MTL which includes documentation and diagrams covering hundreds of hard drives and controller cards with jumper settings, performance specifications, and component locations.

The Ency of I/O Cards — The Encyclopedia of I/O Cards. A publication of MTL which is a database that has documentation and diagrams covering hundreds of I/O cards with jumper settings and other specifications.

The Ency of Main Boards — The Encyclopedia of Main Boards. A publication of MTL which is a database that includes documentation and diagram covering more than a thousand microcomputer mainboards (motherboards).

The Net Inter Tech Guide — The Network Interface Technical Guide. A publication of MTL which is a database that has documentation and diagrams covering hundreds of network boards with jumper settings and other specifications.

Thicknet — See 10Base5.

Thinnet — See 10Base2.

Thread — A list of instructions running in a computer to perform a certain task. Each thread runs in the context of a process, which embodies the protected memory space and the environment of the threads. They allow concurrent operations within a process and enable one process to run different parts of its program on different processors simultaneously.

Throughput — The measure of information flow through a system in a specific time frame, usually one second. For instance, 28.8 Kbps may be the throughput of a modem: 28.8 kilobits per second can be transmitted.

Thunking — A translation process that converts a 16-bit value to its 32-bit equivalent

Time Restriction — A feature that lets users login only during specified days and hours.

Time slice — The amount of processor time allocated to an application, usually measured in milliseconds.

Time synchronization — A means of maintaining consistent time on all network servers. It is important because the NDS operations, such as replica synchronization, need a standard time reference on the entire network.

Timeout — If a device is not performing a task, the amount of time the computer should wait before detecting it as an error.

Timeslicing — A method of multitasking that allocates CPU attention to tasks in fractions of a second, making it appear to users that the multitasking operations are happening simultaneously. Tasks are either assigned priority levels or processed in sequence to maintain order.

TIMESYNC — Loadable module used to monitor and synchronize times on different servers across the network.

Title bar — The horizontal bar (at the top of a window) that contains the title of the window or dialog box. On many windows, the title bar also contains the program icon and the Maximize, Minimize, and Close buttons.

TLIST — A NetWare 3.1x command used to view the trustee list of a directory or a file.

Token Passing — A method of media access control in which an access-granting packet, called a token, is passed in an orderly fashion from one device to another.

Token Ring — (1) A local area network which is an implementation of IEEE standard 802.5, the standard for the token-ring access method. The access method, more than the ring shape, distinguishes token-ring networks from other LANs.
(2) A type of network media that connects clients in a closed ring and uses token passing to enable clients to use the network. See also Ethernet, FDDI, and LocalTalk.

Toolbar — A bar containing buttons giving quick access to commands and procedures, such as bold, italic, create a new document, styles, and drawing buttons. A toolbar can be moved a different location and reshaped. Toolbars can be docked in a position along an edge of the window or they can float free in their own window. Floating toolbars can be dragged to locations which are most convenient. Toolbars that have drop-down lists, such as the Formatting toolbar, cannot dock against a left or right edge. Double-clicking the toolbar background will toggle the toolbar between the last floating and docked positions.

Topic — (1)Information in the Help window. A Help topic usually begins with a title and contains information about a particular task, command, or dialog box.
(2) Information that defines the "subject" of a DDE conversation and represents some unit of data that is meaningful to the DDE server conversation. For most applications that operate on files, this is a filename (for example, SALES.XLS).

Topology — The physical arrangement of devices in a network, regardless of their logical relationships. Types include star, ring, and bus. Note: "network topology" can be either the physical or logical structure of a network.

Total Cache Buffers — The number of blocks currently available for file caching. This number decreases as modules are loaded into memory.

TPING — TPING.NLM (Trivial TCP/IP Ping ) is a troubleshooting tool used to verify that a specific host is on-line. You can specify the packet size (packetsize) and the number of retries (retrycount).

TRACK OFF — A console command used to prevent the file server from displaying network advertising packets that are received or sent on the Router Tracking Screen or TRACK ON screen.

TRACK ON — A console command used at the server to investigate problems with servers, routers, and workstation connections.

TRAN.VLM — Transport Protocol Layer that provides packet transmissions and other transport services.

Transaction Tracking System. — It protects database files from corruption by backing out incomplete transactions that result from a failure in network components or from power failure.

Transactional (T) Attr — An attribute of a file system indicating that the file is protected by Transaction Tracking System (TTS).

Transceiver — An AUI (Attachment Unit Interface) device for receiving and transmitting data that often provides collision detection as well.

Transit Area — Areas that contain more than one ABR.

Transmission Control Protocol (TCP) — A connection-based Internet protocol responsible for breaking data into packets, which the IP protocol sends over the network. This protocol provides a reliable, sequenced communication stream for network communication. See also IP; packet.

Transmission Control Protocol/Internet Protocol (TCP/IP) — The suite of Internet protocols upon which the global Internet is based. It is a set of networking protocols that provide communications across interconnected networks made up of computers with diverse hardware architectures and various operating systems. TCP/IP includes standards for how computers communicate and conventions for connecting networks and routing traffic. TCP/IP is a general term that can refer either to the TCP and IP protocols used together or to the complete set of Internet protocols.

Transmission media — The path between the transmitter and the receiver in a network. Transmission media can be a cable or wireless (using technologies such as microwave).

Transparent application integration — The ability to manipulate information with a variety of applications within a single document, without moving from one application to another to produce the desired results. This is implemented as Object Linking and Embedding in Windows 3.1.

Transparent Bridge — A kind of bridge that learns the location of network devices by associating the source address in an incoming packet with the segment they were received on.

Transport Driver Interface (TDI) — A specification to which all Windows NT transport protocols must be written in order to be used by higher level services such as programming interfaces, file systems, and interprocess communications mechanisms. In Windows networking, it is the common interface for network components that communicate at the Session layer.

Transport layer — The OSI model layer responsible for the guaranteed serial delivery of packets between two computers over an internetwork. This 4th layer of the OSI model is concerned with protocols for error recognition and recovery as well as regulation of information flow. TCP is the Transport layer for the TCP/IP transport protocol.

Transport Protocol — A service that delivers discrete packets of information between any two computers in a network. Higher level connection-oriented services are built upon transport protocols.

Trap — In SNMP, a discrete block of data that indicates that the request failed authentication. The SNMP service can send a trap when it receives a request for information that does not contain the correct community name and that does not match an accepted hostname for the service. Trap destinations are the names or IP addresses of hosts to which the SNMP service is to send traps with community names. See also IP address; SNMP.

Trigger — A set of conditions that, when met, initiate an action. For example, before using Network Monitor to capture data from the network, you can set a trigger to stop the capture or to execute a program or command file.

Trojan horse — A program that masquerades as another common program in an attempt to receive information. An example of a Trojan horse is a program that masquerades as a system logon to retrieve user names and password information, which the writers of the Trojan horse can use later to break into the system.

TrueType — A font specification by which fonts are stored as mathematical models that define the outline of each character

TrueType fonts — Device-independent fonts that are scalable and sometimes generated as bitmaps or soft fonts, depending on the capabilities of your printer. TrueType fonts can be sized to any height, and they print exactly as they appear on the screen. TrueType fonts are stored as outlines and can be scaled and rotated.

Trust — See trust relationship.

Trust relationship — A link between domains that enables pass-through authentication, in which a trusting domain honors the logon authentications of a trusted domain. With trust relationships, a user who has only one user account in one domain can potentially access the entire network. User accounts and global groups defined in a trusted domain can be given rights and resource permissions in a trusting domain, even though those accounts don’t exist in the trusting domain’s directory database. See also directory database; global group; pass-through authentication; user account.

Trust relationships policy — A security policy that determines which domains are trusted and which domains are trusting domains. See also trust relationship.

Trust-based security — A cross-platform security model that adds intermediate levels of trust to the Java security model

Trustee — A user or group who has been granted the rights to work with a directory, file, or object.

Trustee Rights Assg — Trustee Rights Assignment. Assignment of rights by a Supervisor to a user or group. The user or group becomes a trustee of that particular directory or file.

TSAs — Target Service Agents enable a target to be backed up by SBACKUP system.

TSR — See terminate-and-stay-resident program.

Tunneling — The process of sending packets to a computer on a private network by routing them over some other network, such as the Internet

Turbo FAT — An index created by the server in RAM if a file has 64 or more entries in the FAT.

TWAIN — An industry-standard software protocol and API that provides easy integration of image data between input devices, such as scanners and still image digital cameras, and software applications

Twisted Pair Cable — Bounded transmission media that consists of individual wires twisted together. Each wire is insulated and color coded.

Two-way trust relationship — Each domain trusts user accounts in the other domain to use its resources. Users can log on from computers in either domain to the domain that contains their account. See also trust relationship.

TWUNKER — A virtual device that allows communications between 32-bit and 16-bit applications

Type — See file type.

Type 1 fonts — Scalable fonts designed to work with PostScript devices. See also font; font types; PostScript printer.

Typeful Name — An NDS pathname with the specification of object type abbreviation (C, O, OU, and CN) in the names. A typeful name can be a complete name or a partial name.