-LAN-WAN-WLAN standards and industry norms as identified IETF RFCs and trade publications. -Ethernet, CAT 5E and up, single & multi-mode fiber, IEEE cabling standards, TCP/IP, VLANs, OSPF, EIGRP, BGP. -Telecommunication vendor services including circuits, DIDs, PRIs, long distance, 800#s, SIP -Cisco ACI, switches and routers. -Windows AD-based DHCP services. -Network management tools including Solarwinds, Prime/CMX.