Networking Configuration and Troubleshooting Questions

Covers practical networking configuration and diagnostic skills needed to build and operate reliable networks. Topics include IP addressing and subnetting, VLANs and layer two concepts, routing and route selection, switching, DNS and DHCP configuration, firewall and access control rules, network address translation, load balancing basics, virtual and overlay network technologies, packet capture and tracing methodologies, and structured troubleshooting approaches used in lab or production environments. Interviewers will probe the candidate's ability to isolate issues, validate configurations, and apply safe changes.