questions were asked on Walk me through a time you resolved a BGP adjacency issue. How did you identify the root cause? If two OSPF neighbors aren’t forming adjacency, what steps do you take? How would you troubleshoot high latency across a hybrid AWS–Azure link? You receive an alert that a critical service is unreachable. How do you approach troubleshooting across layers (network, transport, application)? Design & Architecture Questions Can you draw and explain a spine-leaf topology? Where do ECMP and EVPN fit in? How would you design a multi-region cloud interconnect with Oracle FastConnect, AWS Direct Connect, and Azure ExpressRoute? Explain the difference between iBGP and eBGP loop prevention. What’s the role of route reflectors in scaling BGP? Can you walk through VXLAN vs MPLS—when would you pick one over the other? How do you tune OSPF LSA flooding in large networks? Automation / Tooling Which tools do you use for network automation (Python, Ansible, Terraform, Netmiko, etc.)? Give me an example of a script you built to reduce manual troubleshooting time. How do you integrate monitoring tools (Splunk, Grafana, SolarWinds, etc.) into proactive troubleshooting?
