Communication between a computer and another computer or device without wires. The form of wireless communication provided as part of the Windows operating system uses infrared light to transmit files. Radio frequencies, as used by cellular and cordless telephones, are another form of wireless communication.
See also: infrared (IR); infrared device; infrared port
Friday, March 27, 2009
workgroup
A simple grouping of computers, intended only to help users find such things as printers and shared folders within that group. Workgroups in Windows do not offer the centralized user accounts and authentication offered by domains.
See also: authentication; domain; user account
See also: authentication; domain; user account
World Wide Web
A system for exploring the Internet by using hyperlinks. When you use a Web browser, the Web appears as a collection of text, pictures, sounds, and digital movies.
Writable CD
Recordable compact disc (CD-R) or rewritable compact disc (CD-RW). Data can be copied to the CD on more than one occasion. Rewritable compact discs can also be erased.
X.509v3 certificate
Version 3 of the ITU-T recommendation X.509 for certificate syntax and format. This is the standard certificate format used by Windows XP certificate-based processes.
An X.509 certificate includes the public key and information about the person or entity to whom the certificate is issued, information about the certificate, plus optional information about the certification authority (CA) issuing the certificate.
See also: International Telecommunication Union - Telecommunication [Standardization Sector] (ITU-T); certificate; certification authority (CA); public key
An X.509 certificate includes the public key and information about the person or entity to whom the certificate is issued, information about the certificate, plus optional information about the certification authority (CA) issuing the certificate.
See also: International Telecommunication Union - Telecommunication [Standardization Sector] (ITU-T); certificate; certification authority (CA); public key
zone
In the Macintosh environment, a logical grouping that simplifies browsing the network for resources, such as servers and printers.
In a DNS database, a manageable unit of the DNS database that is administered by a DNS server. A zone stores the domain names and data of the domain with a corresponding name, except for domain names stored in delegated subdomains.
See also: Domain Name System (DNS); partition; resource; DNS Server; domain
In a DNS database, a manageable unit of the DNS database that is administered by a DNS server. A zone stores the domain names and data of the domain with a corresponding name, except for domain names stored in delegated subdomains.
See also: Domain Name System (DNS); partition; resource; DNS Server; domain
zone listzone list
In the Macintosh environment, a list that includes all of the zones associated with a particular network. Zone list is not to be confused with Windows DNS zones.
See also: Domain Name System (DNS); zone
See also: Domain Name System (DNS); zone
zone transfer
The synchronization of authoritative DNS data between DNS servers. A DNS server configured with a secondary zone periodically queries the master DNS servers to synchronize its zone data.
See also: authoritative; DNS Server; secondary master; zone
See also: authoritative; DNS Server; secondary master; zone
Thursday, March 26, 2009
Infrared Data Association (IrDA)
The industry organization of computer, component, and telecommunications vendors who establish the standards for infrared communication between computers and peripheral devices, such as printers.
Infrared (IR)
Light that is beyond red in the color spectrum. While the light is not visible to the human eye, infrared transmitters and receivers can send and receive infrared signals.
Independent Client
A computer with Message Queuing installed that can host queues and store messages locally. Independent clients do not require synchronous access to a Message Queuing server to send and receive messages, but they can use Message Queuing servers with routing enabled for efficient message routing.
Incremental Zone Transfer (IXFR)
An alternate query type that can be used by some DNS servers to update and synchronize zone data when a zone is changed. When incremental zone transfer is supported between DNS servers, servers can keep track of and transfer only those incremental resource record changes between each version of the zone.
Incremental Backup
A backup that copies only those files created or changed since the last normal or incremental backup. It marks files as having been backed up (in other words, the archive attribute is cleared). If you use a combination of normal and incremental backups to restore your data, you will need to have the last normal backup and all incremental backup sets.
Import Media Pool
A logical collection of data-storage media that has not been cataloged by Removable Storage. Media in an import media pool should be cataloged as soon as possible so that they can be used by an application.
See also: media pool; Removable Storage
Wednesday, March 25, 2009
L2TP
L2TP (Layer 2 Tunneling Protocol)
An industry-standard Internet tunneling protocol. Unlike Point-to-Point Tunneling Protocol (PPTP), L2TP does not require IP connectivity between the client workstation and the server. L2TP requires only that the tunnel medium provide packet-oriented point-to-point connectivity. The protocol can be used over media such as ATM, Frame Relay, and X.25. L2TP provides the same functionality as PPTP. Based on Layer 2 Forwarding (L2F) and PPTP specifications, L2TP allows clients to set up tunnels across intervening networks.
See also: Asynchronous Transfer Mode (ATM); Internet Protocol (IP); Point-to-Point Tunneling Protocol (PPTP); tunnel
An industry-standard Internet tunneling protocol. Unlike Point-to-Point Tunneling Protocol (PPTP), L2TP does not require IP connectivity between the client workstation and the server. L2TP requires only that the tunnel medium provide packet-oriented point-to-point connectivity. The protocol can be used over media such as ATM, Frame Relay, and X.25. L2TP provides the same functionality as PPTP. Based on Layer 2 Forwarding (L2F) and PPTP specifications, L2TP allows clients to set up tunnels across intervening networks.
See also: Asynchronous Transfer Mode (ATM); Internet Protocol (IP); Point-to-Point Tunneling Protocol (PPTP); tunnel
KEYBOARDLAYOUT
keyboard layout
The arrangement that accommodates the special characters and symbols used in different languages. Keyboard layouts affect which characters appear when you press the keys on your keyboard. After you change your keyboard layout, the characters that appear on your screen may no longer correspond to the characters that are printed on your keyboard keys.
The arrangement that accommodates the special characters and symbols used in different languages. Keyboard layouts affect which characters appear when you press the keys on your keyboard. After you change your keyboard layout, the characters that appear on your screen may no longer correspond to the characters that are printed on your keyboard keys.
KEY DISTRIBUTIO CENTER, KEYBOARD LANGUAGE
Key Distribution Center (KDC)
A network service that supplies session tickets and temporary session keys used in the Kerberos V5 authentication protocol. In Windows 2000 and Windows XP, the KDC runs as a privileged process on all domain controllers.
See also: ticket-granting ticket (TGT); Kerberos?V5 authentication protocol; ticket-granting service (TGS)
keyboard language
The language you want to use when you type. Some programs that are designed for the Windows platform recognize this setting. When you add a new keyboard language, a keyboard layout for that language is also added.
A network service that supplies session tickets and temporary session keys used in the Kerberos V5 authentication protocol. In Windows 2000 and Windows XP, the KDC runs as a privileged process on all domain controllers.
See also: ticket-granting ticket (TGT); Kerberos?V5 authentication protocol; ticket-granting service (TGS)
keyboard language
The language you want to use when you type. Some programs that are designed for the Windows platform recognize this setting. When you add a new keyboard language, a keyboard layout for that language is also added.
KERNEL, KEY
kernel
The core of layered architecture that manages the most basic operations of the operating system and the computer's processor. The kernel schedules different blocks of executing code, called threads, for the processor to keep it as busy as possible and coordinates multiple processors to optimize performance. The kernel also synchronizes activities among Executive-level subcomponents, such as I/O Manager and Process Manager, and handles hardware exceptions and other hardware-dependent functions. The kernel works closely with the hardware abstraction layer.
key
In Registry Editor, a folder that appears in the left pane of the Registry Editor window. A key can contain subkeys and value entries. For example, Environment is a key of HKEY_CURRENT_USER.
In IP security (IPSec), a value used in combination with an algorithm to encrypt or decrypt data. Key settings for IP security are configurable to provide greater security.
See also: registry; subkey
The core of layered architecture that manages the most basic operations of the operating system and the computer's processor. The kernel schedules different blocks of executing code, called threads, for the processor to keep it as busy as possible and coordinates multiple processors to optimize performance. The kernel also synchronizes activities among Executive-level subcomponents, such as I/O Manager and Process Manager, and handles hardware exceptions and other hardware-dependent functions. The kernel works closely with the hardware abstraction layer.
key
In Registry Editor, a folder that appears in the left pane of the Registry Editor window. A key can contain subkeys and value entries. For example, Environment is a key of HKEY_CURRENT_USER.
In IP security (IPSec), a value used in combination with an algorithm to encrypt or decrypt data. Key settings for IP security are configurable to provide greater security.
See also: registry; subkey
KERBEROS
Kerberos?V5 authentication protocol
An authentication mechanism used to verify user or host identity. The Kerberos V5 authentication protocol is the default authentication service for Windows 2000. Internet Protocol security (IPSec) and the QoS Admission Control Service use the Kerberos protocol for authentication.See also: Key Distribution Center (KDC); realm; service ticket; ticket-granting service (TGS); ticket-granting ticket (TGT)
An authentication mechanism used to verify user or host identity. The Kerberos V5 authentication protocol is the default authentication service for Windows 2000. Internet Protocol security (IPSec) and the QoS Admission Control Service use the Kerberos protocol for authentication.See also: Key Distribution Center (KDC); realm; service ticket; ticket-granting service (TGS); ticket-granting ticket (TGT)
JUNCTION POINT
junction point
A physical location on a hard disk that points to data located at another location on your hard disk or another storage device. Junction points are created when you create a mounted drive. You can also create a junction point using the linkd command.
See also: mounted drive
A physical location on a hard disk that points to data located at another location on your hard disk or another storage device. Junction points are created when you create a mounted drive. You can also create a junction point using the linkd command.
See also: mounted drive
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