Panko, R. R. <br/><br/>
Business data networks and security / 
Raymond R. Panko, Julia L. Panko 
 - 9th ed. 
 - Boston :  Pearson,  c2013 
 - xxiv, 500 p. :  ill. (chiefly col.) ;  24 cm. 
<br/><br/> Rev. ed. of: Business data networks and telecommunications. 8th ed.  Includes index 
<br/><br/><label>ISBN: </label>9780132742931 0132742934 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Business enterprises--Computer networks--Security measures<br/>Computer networks--Management<br/>Computer networks--Security measures<br/>Computer security