Microsoft Active Directory
5.0(3)Layer 3 switching for engineers
5.0(3)Definitive SIP for engineers
5.0(3)Definitive Ethernet switching for engineers
5.0(3)Linux system administration (LPIC-1)
5.0(3)UNIX system administration
5.0(3)Supporting Microsoft Exchange
5.0(3)Certified Wireless Analysis Professional
5.0(3)Definitive Docker for engineers
5.0(3)