Monday, January 7, 2002		Bits & Bytes

LCP: Short for Link Control Protocol, a protocol that is part of the PPP. In PPP communications, both the sending and receiving devices send out LCP packets to determine specific information that will be required for the data transmission. The LCP checks the identity of the linked device and either accepts or rejects the peer device, determines the acceptable packet size for transmission, searches for errors in configuration and can terminate the link if the parameters are not satisfied.

Perigee and apogee: In satellite communications, most satellites orbit the earth in elliptical patterns with the earth not in the exact centre of the orbital pattern. When a satellite is at its closest point to the earth, it is at the perigee of the orbit. When a satellite is at its furthest point from the earth, it is at the apogee of the orbit.

Site map: A hierarchical visual model of the pages of a Web site. Site maps help users navigate through a Web site that has more than one page by showing the user a diagram of the entire site's contents.