Connecting networks v6 : companion guide 
Cisco Networking Academy. 
 -  Cisco Press,  2018 
 - xxii, 490 pages 
<br/><br/>
<br/><br/><label>ISBN: </label>978-9-81313353-2 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computer network protocols.
<br/><br/><label>Dewey Class. No.: </label>F 004.6 C579 2018