Description of the illustration serveraunicasts.gif

This graphic show four pentagons, labeled A (top left), B (top right), C (bottom right), and D (bottom left). Pentagon A contains a box labeled "Object X" and "A." Pentagon C contains a box labeled "Object X" and "C." In the middle of the graphic, surrounded by the pentagons, is an oval labeled "IP Unicast." An arrow points from pentagon A to the oval. It is labeled, "Service offered on Server A." An arrow points from the oval to pentagon B. An arrow points from the oval to pentagon C. An arrow points from the oval to pentagon D.