John works as a network security officer in Gentech Inc. The company uses a TCP/IP network. While working on the network, a problem occurs related to the DNS resolution. Which of the following utiliti

IPConfig displays the local host's current TCP/IP configuration such as IP address, subnet mask, and default gateway, but does not query or troubleshoot DNS servers.

Ping tests basic ICMP connectivity and measures round-trip latency to a host address, but does not expose or diagnose the DNS resolution process itself.

Tracert traces the Layer 3 hop-by-hop route from source to destination, which is useful for routing and latency issues but not for diagnosing DNS resolution failures.

nslookup (Name Server Lookup) is specifically designed to send queries to DNS servers and return hostname-to-IP mappings, reverse lookups, and specific DNS record types (A, MX, CNAME, PTR, etc.). It supports both interactive and non-interactive modes, allowing a network administrator to test DNS resolution step by step and isolate misconfigurations or failures in the DNS chain. This makes it the primary diagnostic tool for DNS-related problems on any TCP/IP network.