Which command displays all DNS data records associated with a specific host or network?

The command that displays all DNS data records associated with a specific host or network is "dig." This command is widely used by network administrators and IT professionals for querying DNS (Domain Name System) information. When you use dig followed by a hostname, it provides detailed information about various DNS records such as A records, MX records, CNAME records, and many others, depending on the options provided. It collects data directly from the DNS servers and formats it in a user-friendly way.

In contrast, while nslookup can also be used to query DNS records, it typically provides less detailed output compared to dig and is sometimes considered outdated. The host command offers a simpler way to retrieve basic DNS information, but it doesn't provide the comprehensive detail that dig does. ifconfig is used for network interface configuration and management rather than DNS queries, making it irrelevant in this context.