Switching & Routing
VLANs, routing tables, layer 2/3 separation, STP issues, loop prevention
Wireless Infrastructure
Signal coverage, channel overlap, AP placement, throughput optimization
Firewall & Perimeter
Firewall rules, NAT configurations, VPN tunnels, perimeter segmentation
Cloud Networking
Azure VNet, AWS VPC configurations, NSGs, peering, hybrid connectivity
SD-WAN / VPN Architecture
Site-to-site and remote VPNs, bandwidth routing, QoS
Network Performance
Latency, jitter, packet loss, bandwidth bottlenecks, traffic patterns
Network Security
Open ports, ACLs, rogue devices, wireless security protocols
Redundancy & Failover
Uplink resilience, HA design, BGP/OSPF, failover testing
Monitoring & Documentation
NMS setup, SNMP traps, topology maps, logging and alerting