Introduction to networks : companion guide v5.1 
Cisco Networking Academy. 
 -  Cisco Press,  2016 
 - xxviii, 663 p. 
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<br/><br/><label>ISBN: </label>978-9-81313118-7 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computer networks -- Examinations -- Study guides.
<br/><br/><label>Dewey Class. No.: </label>004.6076 C579 2016