Provide expertise in order to certify and support Optical systems to include optical switches, amplifiers, regenerators, Optical Dense Wavelength Division Multiplexing (DWDM), Optical Transport Networking (OTN), Optical Transport Unit (OTU) frames, OTN-based backbones, optical light paths, optical spectrum sharing, optical virtual private networks (O-VPNs), wavelength-based private services, Packet-Optical Transport System (P-OTS), Ethernet, Flexible Ethernet (FlexE), Carrier Ethernet. These technologies include network devices (Optical Transport Systems, Optical Line Systems, Optical Transponders, routers, switches, firewalls, and Intrusion Detection Systems (IDS), and services Authentication, Authorization and Accounting (AAA), Access Control List (ACL), secure remote access (i.e Secure shell, Secure VPN, IPSec), and IPv6 capable devices.