In addition, some of the materials used in IQ tests may be totally foreign to certain cultures, thus creating inequalities and biases. It is interesting to note that IQ scores have increased so much over the 20th century that most of today's test takers would be considered 'geniuses' by 1900 standards.
Digital subscriber line (DSL; originally digital subscriber loop) is a family of technologies that are used to transmit digital data over telephone lines.
Definition of:DSL modem. A device used to connect a single computer or a network to a telephone company digital subscriber line (DSL) service for Internet access. Compared to analog dial-up, DSL significantly increases the bandwidth between the user's computer and the Internet.