Prakash C Gupta <br/><br/>
Data communications and computer networks 

 - 2 
 - Delhi  PHI Learning  2014 
 - xxvii, 848p. : ill.   
<br/><br/> includes index. 
<br/><br/><label>ISBN: </label>9788120348646 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computer networks<br/>Data communication<br/>Network applications<br/>Network security