Short for Primary Domain Controller, a server in a Windows NT network that maintains a read-write directory of user accounts and security information. The PDC authenticates usernames and passwords when members log into the network. Members only have to log into one domain to access all resources in the network.
In a trusted relationship, one domain may gain access to other domains. In this case, members who log into the first domain will have access to the resources in the other domains.
It is also a good idea to have at least one backup domain controller (BDC) in a domain.
Windows 2000 (W2K) approaches the domain controller concept a little differently. Unlike Windows NT, where a PDC must be accessible to make changes to the directory, W2K relies on Active Directory’s multimaster replication model to update all domain controllers when only one is updated. There is no PDC or BDC. All domain controllers are equal.
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PDF is short for Portable Document Format. PDF is a file format developed by Adobe Systems in 1992. PDF captures formatting information from a variety of desktop publishing applications, making it possible to send formatted documents and have them appear on the recipient’s monitor or printer as they were intended.This is because a PDF will […]
(1) Short for Protocol Data Unit. The term used to describe data as it moves from one layer of the OSI model to another. In this reference, PDU is often used synonymously with packet. (2) Short for Power Distribution Unit. An electrical device used to control the distribution of power to individual loads. The PDU […]
Pronounced “peep” and short for Protected Extensible Authentication Protocol, a protocol developed jointly by Microsoft, RSA Security and Cisco for transmitting authentication data, including passwords, over 802.11 wireless networks. PEAP authenticates wireless LAN clients using only server-side digital certificates by creating an encrypted SSL/TLS tunnel between the client and the authentication server. The tunnel then […]
Short for PHP Extension and Application Repository, PEAR is a framework and distribution system for reusable PHP components. PEAR is a community-driven project with the PEAR Group as the governing body. The project was founded by Stig S. Bakken in 1999. The code in PEAR is partitioned in packages, where each package is a separate […]
PEX is a special dielectric that insulates each conductor from each other to help eliminate noise. It is a technology commonly used in Monster Cable products.