00539nam a22001217a 4500020002400000082001500024100002200039245004700061260005000108300003600158500006100194650016200255  a9788120344662 (pbk)  a004.6bSIN  a Singh, Brijendra  a Data communications and computer networks  aNew DelhibPHI Learning Private Limitedc2011  axvi, 399 p.b: ill.c; 23.5 cm.  aIncludes glossary, bibliographical references and index.  aComputer scienceaComputer networksvData transmission systemsvComputer network standardvNetwork managementvNetwork securityvLAN (local area network)vFC