Shay, William A. <br/><br/>
Understanding data communications and networks / William A. Shay 

 - Australia ; Belmont, Calif. : Thomson Brooks/Cole, c2004.  Australia ; Belmont, Calif. : Thomson Brooks/Cole, c2004. 
 - 766 p. ; 25 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Data transmission systems.      Computer networks.