David L. Stevens

DR. DOUGLAS COMER is an internationally recognized expert on TCP/IP protocols and the Internet. One of the researchers who contributed to the Internet as it was being formed in the late 1970s and 1980s; he was a member of the Internet Architecture Board, the group responsible for guiding the Internet's development. He was also chairman of the CSNET technical committee and a member of the CSNET executive committee.

Comer consults for companies on the design and implementation of networks, and gives professional seminars on TCP/IP and internetworking to both technical and nontechnical audiences around the world. His operating system, Xinu, and implementation of TCP/IP protocols are documented in his books, and used in commercial products.

Comer is a professor of computer science at Purdue University, where he teaches courses and does research on computer networking, internetworking, and operating systems. In addition to writing a series of best-selling technical books, he serves as the North American editor of the journal Software — Practice and Experience. Comer is a Fellow of the ACM.

Additional information can be found at: www.cs.purdue.edu/people/comer

DAVID STEVENS received his BS (1985) and MS (1993) in Computer Science from Purdue University. He has been a UNIX systems programmer working primarily on BSD UNIX kernels since 1983. He has done implementations of most of the Internet Protocol Suite and co-authored several Computer Science textbooks with Dr. Comer. His areas of professional interest are operating systems, computer networking, and large-scale software systems design.

In recent years, Stevens has worked in the area of scalable networking on high-performance multiprocessor systems for Sequent Computer Systems and the IBM Corporation. He is a member of the ACM and IEEE.