Windows Operating System: Windows XP/7/8/8.1/10 all windows proper installation and using knowledge is good. Windows Server Operating System: Windows Server 2003/2008/2012/2016 all windows proper installation and using knowledge as well. Microsoft Server using Active directory services, DHCP services, DNS services, FTP services, Exchange Mail Services, Proxy Services, File Services, Web services, etc. Linux Operating System: RHEL7/Centos7/Ubuntu16.04 proper installation and using knowledge as well. VMware: ESXi 6.5 installation and configuration in server, Creating and Managing Virtual Machine and Integrating ESXi host with vCenter Server Appliance. Computer Networking: Local Area Network (LAN), Wide Area Network (WAN), Cabling and Switching, Routing, Sub netting calculation, Virtual Private Network (VPN). Knowledge Storage: SAN & NAS system at Data Center, Redundant Array of Inexpensive Disks (RAID), Failover Cluster etc. Graphic Design: Adobe Photoshop, Adobe Illustrator, and Video Editing. Microsoft Office: MS Word, MS Excel, MS PowerPoint. Computer Language: C, C++, HTML, CSS, PHP, MySQL. Security System: CCTV, DVR, NVR, Time Attendance Machine, Installation, and Maintenance.