01215nam a2200205 a 4500001001400000003000700014005001700021008004100038020001800079020001500097040000800112100002100120245009100141260006100232300003500293500002000328505060400348650002300952700003400975vtls000032241KUKTEM20251117145331.0081113s2009    njua          001 0 eng    a9780131672642  a0131672649  aUMP1 aDumas, M. Barry.10aPrinciples of computer networks and communications /cM. Barry Dumas, Morris Schwartz.  aUpper Saddle River, NJ :bPearson Prentice Hall,cc2009.  axxix, 519 p. :bill. ;c27 cm.  aIncludes index.0 aThe modern signal carriers : electricity, light, media, and impairments -- Signal fundamentals -- Encoding : representing information -- Error control -- Communications connections -- Digital communication techniques -- Comprehending networks -- Local area networks -- Circuit switching, the telcos, and alternatives -- Packet switched wide area networks -- Internetworking and the Internet -- TCP/IP, associated Internet protocols, and routing -- Wireless networks -- Network security -- Network management -- Planning, designing, and implementing a network -- The future of network communications. 0aComputer networks.1 aSchwartz, Morrisq(L. Morris)