Your network contains an Active Directory domain named contoso.com. All DNS servers host a DNS zone named adatum.com. The adatum.com zone is not Active Directory-integrated. An administrator modifies the start of authority (SOA) record for the adatum.com zone. After the modification, you discover that when you add or modify DNS records in the adatum.com zone, the changes are not transferred to the DNS servers that host secondary copies of the adatum.com zone.
You need to ensure that the records are transferred to all the copies of the adatum.com zone. What should you modify in the SOA record for the adatum.com zone? To answer, select the appropriate setting in the answer area.