04-21-2020, 10:58 AM
You need to study these two books:
https://www.ciscopress.com/store/ccna-20...0135792735
https://www.ciscopress.com/store/ccna-20...1587147135
https://www.ciscopress.com/store/ccna-20...0135792735
https://www.ciscopress.com/store/ccna-20...1587147135