N10-009 - Network Troubleshooting - Section 5.3

Use the appropriate software tool or command to solve networking issues, including ping, traceroute, nslookup, ipconfig, and protocol analysers.

Select and interpret the right command-line and software tool for a symptom: ping and traceroute/tracert for reachability and path, nslookup/dig for name resolution, ipconfig/ifconfig and arp for local configuration, and netstat for active connections. Use a protocol analyser (packet capture) and a port scanner when a deeper inspection of traffic or exposed services is required.

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