Forouzan, Behrouz A. Data communications and networking [Book] / Behrouz A. Forouzan with Sophia Chung Fegan. - 2nd ed update. - Boston : McGraw-Hill, c2001. - xxxii, 944 p. : ill. ; 24 cm. - McGraw-Hill Forouzan networking series . Includes index. All. ISBN: 0072822945 Subjects--Topical Terms: Data transmission systems.Computer networks. Dewey Class. No.: 004.6