CertiGuide to Network+  9  Glossary

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Central Processing Unit (CPU)

The part of a computer that has the ability to retrieve, interpret, and execute instructions and to transfer information to and from other resources over the computer’s main data-transfer path, the bus. By definition, the CPU is the chip that functions as the “brain” of a computer.

A 36-pin connector used on printers with a parallel interface.

Computer Emergency Response Team.

A digital document that is commonly used for authentication and secure exchange of information on open networks, such as the Internet, extranets, and intranets. A certificate securely binds a public key to the entity that holds the corresponding private key. Certificates are digitally signed by the issuing certification authority and can be issued for a user, a computer, or a service. The most widely accepted format for certificates is defined by the ITU-T X.509 version 3 international standard.

The Windows 2000 service that issues certificates for a particular CA. It provides customizable services for issuing and managing certificates for the enterprise.

An entity responsible for establishing and vouching for the authenticity of public keys belonging to users (end entities) or other certification authorities. Activities of a certification authority can include binding public keys to distinguished names through signed certificates, managing certificate serial numbers, and certificate revocation.

A specification that addresses the requirements of computer users with disabilities to ensure quality and consistency in assistive devices.

A challenge-response authentication protocol for PPP connections documented in RFC 1994 that uses the industry-standard Message Digest 5 (MD5) one-way encryption scheme to hash the response to a challenge issued by the remote access server.

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