Deal, Richard A. <br/><br/>
CCNA Cisco certified network associate security study guide (Exam 640-553) / 
Richard Deal. 
 - San Francisco :  McGraw-Hill Professional,  2009. 
 - p. cm. 
<br/><br/><label>ISBN: </label>9780071625197 
<br/><br/><label>LCCN: </label>2009027006 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computer networks--Security measures--Problems, exercises, etc.<br/>Telecommunications engineers--Certification.<br/>Computer networks--Security measures--Examinations--Study guides.
<br/><br/><label>LC Class. No.: </label>TK5105.59  / .D428 2009 
<br/><br/><label>Dewey Class. No.: </label>005.8076