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Windows Server 2003 Glossary - K

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Applies To: Windows Server 2000, Windows Server 2003, Windows Server 2003 R2, Windows Server 2003 with SP1, Windows Server 2003 with SP2

For more Windows Server terms, see the Windows Server 2008 Glossary.

Glossary - K

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KDC

See other term: Key Distribution Center (KDC)  

Kerberos V5 authentication protocol

An authentication mechanism used to verify user or host identity. The Kerberos V5 authentication protocol is the default authentication service. Internet Protocol security (IPSec) can use the Kerberos protocol for authentication.

See also: Internet Protocol security (IPsec)   Key Distribution Center (KDC)   realm   service ticket   ticket-granting service (TGS)   ticket-granting ticket (TGT)   

kernel mode

A highly privileged mode of operation where program code has direct access to all memory, including the address spaces of all user-mode processes and applications, and to hardware. Also known as supervisor mode, protected mode, or Ring 0.

key

In Registry Editor, a folder that appears in the left pane of the Registry Editor window. A key can contain subkeys and 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 IPSec are configurable to provide greater security.

See also: entry   Internet Protocol security (IPsec)   registry   subkey   

Key Distribution Center (KDC)

A network service that supplies session tickets and temporary session keys used in the Kerberos V5 authentication protocol.

See also: Kerberos V5 authentication protocol   ticket-granting service (TGS)   ticket-granting ticket (TGT)   

keyboard layout

The arrangement that accommodates the special characters and symbols used in different languages. Keyboard layouts affect which characters appear when users press the keys on their keyboards. After the keyboard layout is changed, the characters that appear on the screen may no longer correspond to the characters that are printed on the keyboard keys.

Knowledge Consistency Checker (KCC)

A built-in process that runs on all domain controllers and generates the replication topology for the Active Directory forest. At specified intervals, the KCC reviews and makes modifications to the replication topology to ensure propagation of data either directly or transitively.

See also: Active Directory   domain controller   forest   replication topology