HOTSPOT
Your network contains an Active Directory forest named adatum.com. The forest contains
three domains named adatum.com, na.adatum.com, and eu.adatum.com.
You have a client computer named Computer1 that runs Windows 8 Enterprise. Computer1
is a member of the na.adatum.com domain.
You need to ensure that single-label names can be resolved from all three domains.
Which setting should you configure? (To answer, select the appropriate setting in the answer area.)
Answer: 
parent suffix is adatum.com
Correct.