Compare the Access Differences Among the Internet, an Intranet, and an Extranet

question 7

Essay

Compare the access differences among the Internet, an intranet, and an extranet.

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Definitions:

Unconscious Inference

A process postulated by Hermann von Helmholtz to explain certain perceptual phenomena such as size constancy. For example, an object is perceived to be at a certain distance and this is unconsciously taken into account in assessing its retinal image size, with the result that size constancy is maintained.

Size Constancy

The perceptual understanding that an object's size remains the same despite changes in the distance from which it is observed.

Perceptual Constancy

The brain's ability to recognize that an object's characteristics remain the same despite changes in the sensory input, such as distance or lighting.

Retinal Image

The image of an object that is projected on the retina. Its size increases with the size of that object and decreases with the object’s distance from the eye.