A computer's fqdn is pc42042. east. contoso. corp. which option in the advanced tcp/ip settings dialog box must be enabled to allow the computer to seamlessly resolve names in the east. contoso. corp and contoso. corp namespaces?

Append parent suffixes of the primary DNS suffix is the appropriate option in the TCP/IP settings window that will allow the system to easily resolve the names in the mentioned namespaces. Name transfer is performed on the respective suffix when you select this option.