CCNA study notes and a protocol reference for routing, switching, VPN and troubleshooting.
31-topic CCNA study notes: OSI and TCP/IP, IPv4/IPv6, VLANs, STP, OSPF, EIGRP, BGP, QoS, ACLs, wireless, network automation and Python.
Advanced routing and VPN reference notes: BGP, OSPF, EIGRP and VPN configuration with examples for network professionals.
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