This graphic shows four pentagons in a north/east/south/west arrangement. Each pentagons contains four boxes labeled "JSP," "EJB," and "JDBC."All of the four boxes in a pentagon are connected by lines. Arrows with arrowheads on both ends, labeled "Potential IP Socket" connect each pentagon. That is, there is an arrow connecting the north pentagon to the east pentagon, the east pentagon to the south pentagon, the south pentagon to the east pentagon, and the east pentagon to the north pentagon.