A multiple-domain account usually allows you to distribute your disk space/transfer over as many domain names as you want (or can).

Spotlight on Mac OS X is a fast desktop search technology that allows users to organize and search for files based on metadata. Spotlight is extensible, allowing developers to provide metadata importers for their application’s documents.

CppUnit is a macro-based unit testing framework for C++.

SSD SUPPORT IS OFF-TOPIC. General HDD/SSD support may be asked on Super User (https://superuser.com). A solid-state drive (SSD) is a flash disk similar to a thumb drive, but much faster and with a hard-disk interface, typically SATA.

A blacklist is a list of entities that are banned from some access or action (entities not in the blacklist are authorized, including unknown entities).

Apache configuration is text based configuration file (or set of files) which are used to configure apache httpd web server

cgi-bin is a special folder in web server's files and folder structure, designed to contains executable scripts written in CGI (Common Gateway Interface). These folders has often a specific properties, i.e. might be auto re-created once deleted or may be blocked from deletion.

Rasterization (or rasterization) is the task of taking an image described in a vector graphics format (shapes) and converting it into a raster image (pixels or dots) for output on a video display or printer, or for storage in a bitmap file format.

PBX is a system that connects telephone extensions of a company to outside public telephone network as well as to mobile networks