Connectivity and User Access Troubleshooting Questions

A combined diagnostic approach for incidents where users cannot reach resources because of either connectivity issues or account and permission problems. This includes triage steps to determine whether a failure is network related, system or service related, or related to authentication and authorization; using network and system diagnostic tools such as ping, traceroute, and domain name system lookups; checking firewall and access control lists; reviewing system and application logs; verifying user account status, group membership, and permissions; and testing access from different systems and network locations to isolate variables. Candidates should demonstrate logical fault isolation, escalation reasoning, and safe verification of account and permission state.