network-administration
Network administration covers the design, configuration, and operation of the wired and wireless networks that connect users, servers, plant-floor devices, and cloud services. Administrators manage switches, routers, firewalls, VPNs, VLANs, DNS, and DHCP while monitoring performance, capacity, and security posture. In industrial settings, OT/IT convergence means network admins increasingly support control-system traffic with strict availability and segmentation requirements.
