Forouzan, Behrouz A. <br/><br/>
Data communications and networking 

 - 4th ed. 
 - Boston  McGraw-Hill.  2007. 
 - xxxiv; 1134p.: ill. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>9780071254427 
<br/><br/><label>LC Class. No.: </label>TK 5105  / for2007