Introduction to networks v6 companion guide / 
Cisco Networking Academy 
 - Singapore :  Pearson Education  South Asia Pte Ltd,  2017. 
 - xxviii, 663 p.: ill.;  23.5 cm. 
<br/><br/>Includes appendix, glossary, index 
<br/><br/><label>ISBN: </label>9789813132610 
<br/><br/><label>Dewey Class. No.: </label>C 004.6 In61 2017