CCNA voice 640-461 : Official cert guide /
Cioara, Jeremy
CCNA voice 640-461 : Official cert guide / Jeremy Cioara; Michael Valentine. - Indianapolis, Ind. : Cisco, 2013. - xxvii, 498 p. : ill.; 24 sm.
978-1-58720-417-3 1-58720-417-7
Computing equipment
CCNA voice 640-461 : Official cert guide / Jeremy Cioara; Michael Valentine. - Indianapolis, Ind. : Cisco, 2013. - xxvii, 498 p. : ill.; 24 sm.
978-1-58720-417-3 1-58720-417-7
Computing equipment