Go back to EX0-107 - SCNP Strategic Infrastructure Security

Question :-

In your Windows 2003 Active Directory enabled network it has been decided that Dynamic DNS will be implemented. Once implemented this should help to minimize IP address to name mapping issues. One of your assistants wonders if using DDNS will present a single point of failure for the network. Which of the following is the reason that this is not the case?
Each client builds a DNS table that can be shared if need be.
Each client is configured with an Internet DNS server address in addition to the internal server.
All the Windows 2003 servers maintain a copy of the DDNS database.
All the Windows NT domain controllers maintain a copy of the DDNS database.
All the Windows 2003 domain controllers maintain a copy of the DDNS database.

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