RAJ JAIN is a Senior Consulting Engineer in the Distributed Systems Architecture and Performance Group at Digital Equipment Corporation. With over sixteen years of experience in the field of computer systems performance, he is currently responsible for analyzing various design alternatives for DEC's networking architecture. He received the Ph.D. degree from Harvard and has taught courses on performance at Massachusetts Institute of Technology. "Dr. Jain is a Fellow of the IEEE and is listed in Who's Who in the Computer Industry, 1989."R. K. Jain is the author of 'The Art of Computer Systems Performance Analysis: Techniques for Experimental Design, Measurement, Simulation, and Modeling' with ISBN 9780471503361 and ISBN 0471503363.