An acronym for Layer 2 Forwarding (also known as level 2); a tunneling protocol from Cisco Systems. L2F has been submitted to the Internet Engineering Task Force (IETF) for approval as a standard. In addition, Northern Telecom Inc. (Nortel) and Shiva Corp. (Shiva is now owned by Intel) (Shiva), have all announced their support for L2F.

An acronym for Layer 2 Switch (also known as level 2).

An acronym for Layer 3 Forwarding (also known as level 3); a tunneling protocol from Cisco Systems. L3F has been submitted to the Internet Engineering Task Force (IETF) for approval as a standard. In addition, Northern Telecom Inc. (Nortel) and Shiva Corp. (Shiva is now owned by Intel) (Shiva), as well as many other L2F supporting companies, have a [..]

An acronym for Layer Three Tunneling Protocol (also known as level 3), an extension to the PPP protocol that enables ISPs to operate Virtual Private Networks (VPNs). L3TP merges the best features of three other tunneling protocols: PPTP from Microsoft, L2F and L3F both from Cisco Systems. Like PPTP, L2TP and L3TP require that the ISP's routers [..]

A set of protocols and syntax conditions that allow programming within a group on known conditions. Short (slang) for programming languages for more information.

An acronym for Light Amplification by the Stimulated Emission of Radiation. It is a device that creates a uniform and coherent light that is very different from an ordinary light bulb. The uses vary but in the computer industry, lasers are mainly used in networks as avenues for data transfer or lasers are the engine for many printers. Many lasers d [..]

1. An imaginary line around the Earth parallel to the equator. Latitude is measured from the equator, with positive values going North and negative values going South. However, some databases do return South as positive. Be sure to verify on the legend of the map, information or database, which is positive. 2. The angular distance between an imagin [..]

Please see L3S. Also see L3F and L3TP.

An acronym for Liquid Crystal On Silicon, TV technology for flat screen displays; a technology that most major technology and equipment manufacturers have shunned after experimentation. It is kind of a hybrid of DLP, and LCD without some of the problems of either but also with the strong features of either. As of October 2004, Intel and early LCOS [..]

An acronym for Light Dependent Resistor. This is a special type of resistor and is sometimes called a photoconductor. LDRs are made so that their resistance decreases as the level of light falling on them increases.