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During a system audit, a technician needs to confirm that the local DNS server can resolve external domains for troubleshooting purposes. What is the best command to use for this task?
Correct Answer: B
Correct Answer. B. nslookup google.com Using nslookup without specifying an external DNS server tests whether the local DNS server can resolve the external domain, which is crucial for validating the local DNS server's effectiveness. Option A is incorrect. This tests Google's DNS, not the local DNS server. Option C is incorrect. Pinging an IP address tests connectivity but does not verify DNS resolution capabilities. Option D is incorrect. The ARP command displays the ARP table, which is unrelated to DNS resolution.