Compounds. There are more carbon compounds than there are compounds of all other elements combined. The study of carbon compounds, both natural and synthetic, is called organic chemistry. Plastics, foods, textiles, and many other common substances contain carbon.
backplane is the shared capacity between interfaces on a switch switch fabric is also the shared capacity between interfaces on a switch and can also be the shared capacity between interfaces on multiple switches using some sort of interconnect, typically vendor specific.
The Linksys WRT54G2 Wireless-G Broadband Router is a three-in-one device. It acts as a wireless Access Point which lets you connect your wireless computers and devices to it without using wires. It also serves as a built-in 4-port full-duplex 10/100 switch to connect your wired devices to it using Ethernet cables.