T
tag
For Indexing Service, one
or more terms that identify an element in a query, such as weight, phrase,
property, or regular expression. For example, the tag {prop name=created}
specifies the Created property in a query.
target
The mapping destination
of a DFS root or link, which corresponds to a physical folder that has
been shared on the network.
target
journaling
For Message Queuing, the
process of storing a copy of incoming messages. Target journaling is
configured on a queue basis. When target journaling is enabled, a copy of
each incoming message is placed in the target journal queue when the
message is retrieved (read) from the destination
queue.
Task
Manager
A utility that provides
information about programs and processes running on the computer. Using
Task Manager, you can end or run programs and end processes, and display a
dynamic overview of your computer's performance.
taskbar
The bar that contains the
Start button and appears by default at the bottom of the desktop.
You can click the taskbar buttons to switch between programs. You can also
hide the taskbar, move it to the sides or top of the desktop, and
customize it in other ways.
taskbar
button
A button that appears on
the taskbar and corresponds to a running
application.
TCP
Transmission Control
Protocol.
TCP/IP
Telephony API
(TAPI)
An application
programming interface (API) used by communications programs to work with
telephony and network services. Communications programs like HyperTerminal
and Phone Dialer use TAPI to dial, answer, and route telephone calls on
conventional telephony devices, including PBXs, modems, and fax machines.
TAPI 3.0 also provides Internet Protocol (IP) telephony support, which
Phone Dialer and other programs use to transmit, route, and control
real-time audio and video signals over IP-based networks such as the
Internet.
Telnet
A terminal-emulation
protocol that is widely used on the Internet to log on to network
computers. Telnet also refers to the application that uses the Telnet
protocol for users who log on from remote locations.
terminal
A device consisting of a
display screen and a keyboard that is used to communicate with a
computer.
terminate-and-stay-resident (TSR)
program
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 queue
For Message Queuing, a
queue that stores sent test messages.
text box
In a dialog box, a box in
which you type information needed to carry out a command. The text box may
be blank or may contain text when the dialog box
opens.
text
service
A program that enables a
user to enter or edit text. Text services include keyboard layouts,
handwriting and speech recognition programs, and Input Method Editors
(IMEs). IMEs are used to enter East Asian language characters with a
keyboard.
theme
A set of visual elements
that provide a unified look for your computer desktop. A theme determines
the look of the various graphic elements of your desktop, such as the
windows, icons, fonts, colors, and the background and screen saver
pictures. It can also define sounds associated with events such as opening
or closing a program.
Thread
Count
In Task Manager, the
number of threads running in a process.
thumbnail
A miniature version of an
image that is often used for quick browsing through multiple
images.
ticket
A set of identification
data for a security principle, issued by a domain controller for purposes
of user authentication. Two forms of tickets in Windows are
ticket-granting tickets (TGTs) and service tickets.
ticket-granting service
(TGS)
A Kerberos V5 service
provided by the Kerberos V5 Key Distribution Center (KDC) service that
issues service tickets that allow users to authenticate to services in a
domain.
ticket-granting ticket
(TGT)
A credential issued to a
user by the Kerberos Key Distribution Center (KDC) when the user logs on.
The user must present the TGT to the KDC when requesting session tickets
for services. Because a TGT is normally valid for the life of the user's
logon session, it is sometimes called a user ticket.
time
server
A computer that
periodically synchronizes the time on all computers within a network. This
ensures that the time used by network services and local functions remains
accurate.
time slice
A brief period of time
during which a particular task is given control of the microprocessor in a
time-sharing multitasking environment. A computer's processor is allocated
to an application, usually measured in milliseconds. Time slice is also
called quantum.
time stamp
A certification by a
trusted third party specifying that a particular message existed at a
specific time and date. In a digital context, trusted third parties
generate a trusted time stamp for a given message by having a time
stamping service append a time value to a message and then digitally
signing the result.
Time to Live
(TTL)
A timer value included in
packets sent over TCP/IP-based networks that tells the recipients how long
to hold or use the packet or any of its included data before expiring and
discarding the packet or data. For DNS, TTL values are used in resource
records within a zone to determine how long requesting clients should
cache and use this information when it appears in a query response
answered by a DNS server for the zone.
time-out
error
A condition where an
expected character is not received in time. When this condition occurs,
the software assumes that the data has been lost and requests that it be
resent.
time-out
interval
For Process Control, the
time the server waits, when a command cannot be successfully completed,
before canceling the command. You can configure this in the Process
Control snap-in.
title bar
The horizontal bar at the
top of a window that contains the name of the window. On many windows, the
title bar also contains the program icon, the Maximize,
Minimize, and Close buttons, and the optional ?
button for context-sensitive Help. To display a menu with commands such as
Restore and Move, right-click the title
bar.
ToggleKeys
A feature that sets your
keyboard to beep when one of the locking keys (CAPS LOCK, NUM LOCK, or
SCROLL LOCK) is turned on or off.
token
Any nonreducible textual
element in data that is being parsed. For example, the use in a program of
a variable name, a reserved word, or an operator. Storing tokens as short
codes shortens program files and speeds execution.
For networking, a unique
structured data object or message that circulates continuously among the
nodes of a token ring and describes the current state of the network.
Before any node can send a message on the network, it must first wait to
control the token. See also token ring.
toolbar
In a program in a
graphical user interface, a row, column, or block of on-screen buttons or
icons. When clicked, these buttons or icons activate certain functions, or
tasks, of the program. For example, the toolbar in Microsoft Word contains
buttons for, among other actions, changing text to italic or boldface, and
for saving or opening a document. Users can often customize toolbars and
move them around on the screen.
top-level
domains
Domain names that are
rooted hierarchically at the first tier of the domain namespace directly
beneath the root (.) of the DNS namespace. On the Internet, top-level
domain names such as .com and .org are used to classify and
assign second-level domain names (such as microsoft.com) to
individual organizations and businesses according to their organizational
purpose.
topology
In Windows, the
relationships among a set of network components. In the context of Active
Directory replication, topology refers to the set of connections that
domain controllers use to replicate information among
themselves.
touch-tone
dialing
A form of dialing that
uses multiple-tone signaling. The user hears a series of tones (beeps)
when dialing. Push-button telephones usually use touch-tone
dialing.
trace log
A type of log generated
when the user selects a trace data provider using Performance. Trace logs
differ sdff from counter-data logs in that they measure data continuously
rather than take periodic samples.
training
The process of teaching
the speech recognition engine to recognize your voice and manner of
speaking. The speech engine looks for patterns in the way you speak,
enabling it to provide better accuracy when you dictate text. You train
the engine by reading text in the training wizard, and continue to train
the engine as you dictate text while working.
transaction
For Message Queuing, the
pairing of two or more actions that are performed together as a single
action; the action succeeds or fails as a whole. Using Microsoft
Distributed Transaction Coordinator (MS DTC) ensures that either both
actions succeed or neither is executed.
transaction dead-letter
queue
For Message Queuing, a
queue that stores transactional messages that cannot reach their
destination queue. Transaction dead-letter queues store failed messages on
the computer on which the message expired. Messages in these queues are
written to disk and are therefore recoverable.
transactional
message
For Message Queuing, a
message that can be sent and received only from within a transaction. This
type of message returns to its prior state when a transaction is
terminated abruptly. A transactional message is removed from a queue only
when the transaction is committed; otherwise, it remains in the queue and
can be subsequently read during another transaction.
transceiver
A device that can both
transmit and receive signals. On local area networks (LANs), a transceiver
is the device that connects a computer to the network and that converts
signals to and from parallel and serial form.
transitive
trust
The standard type of
trust relationship between Windows domains in a domain tree or forest.
When a domain joins an existing forest or domain tree, a transitive trust
is automatically established. Transitive trusts are always two-way
relationships. This series of trusts, between parent and child domains in
a domain tree and between root domains of domain trees in a forest, allows
all domains in a forest to trust each other for the purposes of
authentication. For example, if domain A trusts domain B and domain B
trusts domain C, then domain A trusts domain C.
Transmission Control
Protocol/Internet Protocol (TCP/IP)
A set of networking
protocols widely used on the Internet that provides communications across
interconnected networks 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.
transmitting station ID (TSID)
string
A string that specifies
the transmitter subscriber ID sent by the fax machine when sending a fax
to a receiving machine. This string is usually a combination of the fax or
telephone number and the name of the business. It is often the same as the
called subscriber ID.
Transport Driver Interface
(TDI)
A common set of routines
for network layer components that communicate with the session layer of
the Open Systems Interconnection (OSI) model. These routines allow
software components above and below the transport layer to be mixed and
matched without reprogramming.
Transport Layer Security
(TLS)
A standard protocol that
is used to provide secure Web communications on the Internet or intranets.
It enables clients to authenticate servers or, optionally, servers to
authenticate clients. It also provides a secure channel by encrypting
communications. TLS is the latest and a more secure version of the SSL
protocol.
transport
provider
The driver and support
files that provide transport services in a networking
environment.
trap
In Simple Network
Management Protocol (SNMP), a message sent by an agent to a management
system indicating that an event has occurred on the host running the
agent.
tree view
A hierarchical
representation of the folders, files, disk drives, and other resources
connected to a computer or network. For example, Windows Explorer uses a
tree view to display the resources that are attached to a computer or a
network.
Trivial File Transfer Protocol
(TFTP)
A protocol used to
download the initial files needed to begin the installation
process.
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 behaves like a
system logon to retrieve user names and password information that the
writers of the Trojan horse can later use to break into the
system.
TrueType
fonts
Fonts that are scalable
and sometimes generated as bitmaps or soft fonts, depending on the
capabilities of your printer. TrueType fonts are device-independent fonts
that are stored as outlines. They can be sized to any height, and they can
be printed exactly as they appear on the screen.
trust
relationship
A logical relationship
established between domains to allow pass-through authentication, in which
a trusting domain honors the logon authentications of a trusted domain.
User accounts and global groups defined in a trusted domain can be given
rights and permissions in a trusting domain, even though the user accounts
or groups don't exist in the trusting domain's
directory.
tunnel
A logical connection over
which data is encapsulated. Typically, both encapsulation and encryption
are performed and the tunnel is a private, secure link between a remote
user or host and a private network.
tunnel
server
A server or router that
terminates tunnels and forwards traffic to the hosts on the target
network.
two-way
trust
A type of trust
relationship in which both of the domains in the relationship trust each
other. In a two-way trust relationship, each domain has established a
one-way trust with the other domain. For example, domain A trusts domain B
and domain B trusts domain A. Two-way trusts can be transitive or
nontransitive. All two-way trusts between Windows domains in the same
domain tree or forest are transitive.
Type 1
fonts
Scalable fonts designed
to work with PostScript
devices.
