To convert a zone to Active Directory-integrated, which action is required?

To convert a zone to Active Directory-integrated, the essential action required is to select the option that allows for the storage of the zone in Active Directory. This choice signifies that the DNS zone will utilize Active Directory as its database storage, thus enabling enhanced features such as replication and security.

When a zone is stored in Active Directory, various advantages come into play. For instance, it allows for multi-master replication, meaning changes can be made on any domain controller without needing a specific master server, significantly improving the reliability and availability of DNS records. Additionally, since the data is integrated into Active Directory, it benefits from the inherent security mechanisms of Active Directory, such as access control lists (ACLs), protecting DNS data from unauthorized access.

While options like changing the zone type to Secondary or enabling dynamic updates are relevant DNS configurations, they do not specifically pertain to converting a zone into an Active Directory-integrated zone. Likewise, setting the replication scope is a part of the broader configuration process but is contingent upon first choosing to store the zone in Active Directory. Therefore, selecting to store the zone in Active Directory is the fundamental step required for this conversion process.