You're in a Network Administrator interview.
Your interviewer asked:
"If attempts to ping a DNS server (IP: 10.10.10.10) from your PC consistently fail, what initial network troubleshooting command would you execute?"
How might you answer? Here's a suggested approach:👇🧵
Step 1: "Ping 10.10.10.10" – Simple yet powerful. Confirm basic connectivity and assess if the server responds.
If pings fail, next move: "ipconfig /all" – Verify IP, subnet, and gateway settings on your PC. Misconfigurations often hide here.
Next Step: "traceroute 10.10.10.10" – Trace the route to identify where the communication breakdown occurs. It is utilized to trace the route that packets take from your computer to a destination IP address or domain. This tool provides information about the number of hops (intermediate routers) and the time it takes for packets to travel between each hop. This can be valuable for identifying network issues, bottlenecks, or delays.
Security Check: "firewall-cmd --list-all" (Linux) or "Get-NetFirewallRule" (Windows) – Ensure no firewall blocks disrupt the communication.
No progress? Check DNS server status with 'nslookup 10.10.10.10'. Confirming if the DNS server is operational.
🔄 Recap: Start with basic ping, delve into IP settings, trace the route, and checking firewalls to DNS server status. An organized troubleshooting approach is key.
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