Concise Cisco routing
5.0(3)Definitive DNS for engineers
5.0(3)Total UNIX networking for engineers
5.0(3)GPON and FTTx networks
5.0(3)Network automation for engineers
5.0(3)Wireshark Certified Network Analyst
5.0(3)Advanced Python for network engineers
5.0(3)DevOps for networking engineers
5.0(3)