Which command allows you to validate the static DNS server information during configuration?

The command that allows you to validate the static DNS server information during configuration is the option that states to "Validate settings upon exit." This feature is typically found in the context of network configuration tools or wizards, where upon completing the configuration, the tool will automatically check the entered settings against known configurations, ensuring everything is correct before finalizing the changes.

This mechanism ensures that the configured static DNS settings are operational and that they can communicate properly with the DNS servers, which is crucial for resolving domain names to IP addresses. It adds a layer of verification for the administrator to confirm that the inputted DNS information is valid and properly set up before application.

In contrast, other options like ping and nslookup serve different purposes. Ping is primarily used to test connectivity to a specific IP address or hostname, while nslookup is a tool for querying DNS to obtain domain name or IP address mapping. While ipconfig can show the current DNS configuration and may help with diagnosing issues, it does not validate the DNS settings at the point of configuration. Therefore, "Validate settings upon exit" stands out as the correct answer, focusing on the verification of static DNS information directly related to the configuration process.