F
Fiber Optics. Thin strands of ultrapure glass that can be used to carry light waves from one location to another.
Filter. A device which transmits a specific frequency and stops all other frequencies.
Firewall. A security product that employs a combination of hardware and software to prevent unauthorized users or traffic from the Internet from gaining access onto a private local area network (LAN).
Frame Relay. A
Frequency. The rate at which an electromagnetic waveform (or electrical current) alternates, usually measured in Hertz (Hz).
G
Gigabyte. 1,000,000,000 bytes, or 1,000 Megabytes. See Byte.
Graphical User Interface (GUI). A computer operating system that is based upon icons and visual relationships rather than text. Windows and the Macintosh computer use a GUI.
GUI. See Graphical User Interface.
H
Hertz. See Frequency.
Home Networking. Connecting the different electronic devices in a household by way of a local area network (LAN).
Home Phoneline Networking Alliance. An association of companies who are working on a standard for home phoneline networking. HomePNA technology allows
HomePNA. See Home Phoneline Networking Alliance.
HomeRF. Also known as Home Radio Frequency Working Group. An industry specification for the interaction of wireless digital communication between PCs and electronic devices in the home.
HTML. See Hypertext Markup Language.
HTTP. See Hypertext Transfer Protocol.
Hub. The point on a network where circuits are connected.
Hybrid Fiber/Coax (HFC). A type of network architecture that includes a combination of coaxial and fiber cables to distribute signals to a group of individual locations (typically 500 or more).
Hypertext. Documents or other information with embedded links that enable a reader to access tangential information at specific points in the text.
