Citrix Certified Professional - Networking (CCP-N)
Citrix Certified Administrator - Networking (CCA-N)
Citrix Certified Expert - Virtualization (CCE-V)
Microsoft Certified Professional (MCP)
Microsoft Certified Solutions Associate (MCSA)
Microsoft Certified Solutions Expert (MCSE)
Red Hat Certified System Administrator (RHCSA)
Red Hat Certified Engineer (RHCE)
VMWare Certified Professional - Data Center Virtualization 6 (VCP-DCV6)