data communications and networking fourth edition

continuesintheForouzantraditionofprovidingaccessible，compretlensiveandup-to-datecoverageofnetworkingtechnologies.Hisstudent-friendlyapproachutilizeshundredsofdiagrams，andminimizestheuseofmath.Forouzan'sexcellentpedagogyincludesworkedexamples，applicationsfromeverydaylife，andnumerouspractic