Forouzan, Behrouz A. Data communications and networking / Behrouz A. Forouzan with Sophia Chung Fegan. - 4th ed. (Int'l ed.) - Boston : Mcgraw Hill Higher Education, 2007. - xxxiv, 1134 p. : ill. ; 24 cm. - Mcgraw-Hill Forouzan networking series . Includes bibliographical references and index. ISBN: 0071254420 Subjects--Topical Terms: Computer networks.Data transmission systems. Dewey Class. No.: 004.6 FOR 2007