Johnson, Allan. <br/><br/>
Routing and switching essentials.  v6, Lab & study guide / 
Allan Johnson. 
 - Version 6. 
 - Indianapolis, IN :  Cisco Systems, Inc.,  c2017. 
 - xxxiv, 503 pages :  black and white illustrations ;  28 cm. 
<br/><br/><label>ISBN: </label>9781587134265 (pbk. : alk. paper) 
<br/><br/><label>LC Class. No.: </label>TK 5105.5487  / J66 2017 
<br/><br/><label>Dewey Class. No.: </label>004.65  / JOH 2017