When validating domain name-to-IP address mappings, which utility is applicable?

The utility used to validate domain name-to-IP address mappings is nslookup. This command-line tool is specifically designed for querying the Domain Name System (DNS) to obtain domain name or IP address mapping information. By using nslookup, you can perform DNS lookups, retrieve information about DNS servers, and resolve domain names to their corresponding IP addresses.

When you enter a domain name with nslookup, it sends a query to the DNS server which then returns the relevant IP address associated with that domain name. This makes it an essential tool for troubleshooting and ensuring that domain name resolution is functioning correctly.

While dig is another DNS querying tool that performs similar functions as nslookup, it might offer more advanced features and configurations. However, in this context, nslookup is the more widely recognized tool for validating domain-to-IP mappings, especially in basic use cases.

RDP (Remote Desktop Protocol) and SSH (Secure Shell) are communication protocols used for remote access and do not provide any functionality for querying domain name resolution. Thus, they are not applicable in this scenario.