Desired Competencies (Technical/Behavioral Competency) Must-Have Deep understanding of TCP/IP, DNS, DHCP, VLANs, Subnetting, Routing (OSPF/BGP/EIGRP), and Switching protocols. Hands-on experience with enterprise firewalls, VPNs, load balancers, and proxies. Network configuration, monitoring, and troubleshooting on Cisco, Juniper, Fortinet,