00570nam a22001817a 450000500170000001000150001702000260003203500130005803700130007108200100008410000220009424500690011625000110018526000340019627000730023030000350030350000500033820140102104945.0  aENG-108926  a9788120348646c495.00  aEN-92459  bDBAD/PUB  a004.6  aGupta, Prakash C.  aData communications and computer networks /cby Prakash C. Gupta  a2th ed  aNew DelhibPHI Learningc2014  aRimjhim House,111, Patparganj Industrial Estate, bNew Delhie110092  axxvii,848p. :c24cm(pbk)bill.  aIncludes bibliographical references and index