(A) record: see Host (A) record.
Absolute value: The actual numerical value of the quantity.
Alias (CNAME) record: A record that maps one host name to another. The target host does not have to be within a local domain.
Allocate: To assign resources for a specific task. This is often used to refer to memory use, disk space, bandwidth, or process cycles.
Anonymous FTP: File Transfer Service (FTP) is a protocol used to transfer files over the Internet. Anonymous FTP allows you to use an FTP site without a password and without creating a user account.
Apache Web Server: A widely used UNIX-based Web server for the Internet. Apache supports both UNIX and Windows operating systems.
Appliance: A collection of related server applications with all dependent applications bundled into one optimized package.
Autoresponder: A mail utility that automatically sends a standard reply message to an email message.
Autostart: Setting an application to automatically run when the system starts.