A network technician suspects issues with domain name resolutions in a client's network. Which software tool should primarily be used to diagnose problems related to DNS resolution?
nslookup
arp
ping
traceroute
The correct answer is 'nslookup'. This command-line tool is specifically used for querying the Domain Name System (DNS) to obtain domain name or IP address mapping, or other specific DNS records. It is particularly useful for troubleshooting DNS problems. 'ping' is primarily used to test the reachability of a host on an IP network and measure round-trip time, but it does not provide DNS record information. 'traceroute' displays the path that a packet takes to reach a host but does not show detailed DNS record information. 'arp' is used to view or modify the IP-to-Physical address translation tables used by ARP (Address Resolution Protocol), which does not help with DNS resolution issues.
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