00498nam a2200169Ia 4500003000900000008004100009020001800050040001600068080001600084100001800100245012200118250001200240260003500252300001500287650001300302650001300315IN-BaIIA211028s9999    xx            000 0 eng d  a81-203-1041-1  cIIA Library  a681.31bBLA  aBlack, Uyless 0aComputer networksbprotocols, standards, and InterfacescUyless Black                                                  a2nd ed.  aNew DelhibPrentice-Hallc2005  axii, 456p.  aComputer  aNetworks