00486nam 2223866 450000100060000000300230000600500090002900800410003808200100007907200240008902000180011310000240013126000250015525000060018024500220018665000240020865000390023265000230027123866StarLibrary Marc Built20180430201711 ||||| |||||||||||amh  a004.6 athe data link layer a81-203-2175-8 aAndrew S. Tanenbaum bPrentice Hall c2003 a3 aCOMPUTER NETWORKS athe data link layer athe medium access control sublayer athe physical layer