This gain will not always represent itself as an increase in signal, since the losses in the receiver may be greater than its internal amplifier. The basic colors used in generating images on a color monitor or television screen. In RGB systems, various hues and shades are created additively, so that when all three colors are at their fullest intensity, the image is white. Having one or more backup systems available in case the primary system fails. RAID technology is a method of using several hard disk drives in an array to provide fault tolerance.
RAID improves redundancy and limits downtime.
A second connection between transmission and receive devices that operates only when integrity is lost on the active link. The abrupt change in the direction of light as it travels from one material to a dissimilar material. Some of the reflected power in a fiber gets transmitted back to the source. The bending of light as it passes through two dissimilar materials or in a medium whose refractive index varies smoothly. Important in fiber optic technology.