00856    a2200229   4500003000500000005001700005010001600022020001500038020002900053040000900082082001200091100002200103245008500125250001200210260008800222300002900310440004300339505014900382650002300531650003100554650004100585Nust20230124094338.0  a   84004617  a0470200782  a0470200782 (pbk. : U.S.)  cNust00a384,DEA1 aDeasington, R. J.12aA practical guide to computer communications and networking / cR.J. Deasington.  a2nd ed.  aChichester, West Sussex, England :bE. Horwood ;aNew York :bHalsted Press,c1984.  a126 p. :bill. ;c25 cm. 0aComputers and their applications ;v22  aBasic Concepts (Page-11), Transmission of Data (Page-21), Physical Network Techniques (Page-43), Implementation (Page-68), Protocols (Page-87).  0aComputer networks. 0aData transmission systems. 0aPacket switching (Data transmission)