E．zonexam.com's network contains two domain controllers and approximately 500 client computers. The domain controllers run Windows 2000 Server. The client computers run Windows 2000 Professional. The majority of users have mobile computers. Users in Ezonexam often travel with their mobile computer for extended periods of time and do not have remote access to Ezonexam.com's network.

You want to configure the domain controllers so that DNS only contains entries for computers that are active on the network. You also want to ensure that when users return you do not have to manually create or delete DNS entries.

H．ow should you configure the DNS servers?

A．Configure both domain controllers with Active Directory integrated primary zones for the domain and enable secure dynamic updates for the zone.

B．Configure both domain controllers with Active Directory integrated primary zones for the domain and the secure cache against pollution option for the zone.

C．Configure both domain controllers with Active Directory integrated primary zones for the domain and enable scavenging and dynamic updates for the zone.

D．Configure both domain controllers with standard primary zones for the domain and enable scavenging for the zone.

E．Configure one server with a standard primary zone for the domain, and configure at least one server with an Active Directory integrated primary zone.

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