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CompTIA Linux+ XK0-006 · Domain 5: Troubleshooting

Networking: ping, ip route, ss, dig/resolvectl, traceroute/tracepath/mtr, tcpdump, nmap

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Last reviewed September 30, 2026 · Leer en español

Network troubleshooting goes fastest when you work through the layers in order: is the interface up with the right address, can you reach the gateway, does routing work, does name resolution work, and is the service actually listening and allowed through? Each tool below answers one of those questions, and knowing which tool answers which question is what the exam tests.

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