00442nam a2200181 a 450000500170000002000180001708200150003510000170005024500480006726000340011530000270014950000190017660000080019563000230020363000220022685600060024885600060025420251203112620.0  a9788120348455  a004.6bPAL  aPal, Ajitd_  aData communication and computer networksb_  aNew DelhibPHI Learningc2014  axv, 396 p.c24 cm.bPB  aIncludes index  bc_  aData communication  aComputer networks  f_  a_