Networking Fundamentals · lesson 16 of 17 · 20 min

Using ping, traceroute, and nslookup

summary: These diagnostic commands answer different questions: ping checks reachability, traceroute shows a path, and nslookup checks name resolution. Use them only on systems you are authorized to test.

question: Which command checks whether a name resolves to an IP address?

options:

• ping
• traceroute
• nslookup
• chmod

correct: nslookup

explanation: nslookup queries DNS to help verify name resolution.

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