You are designing a strategy to perform inplace upgrade of domain controller in Boston and San Diego. Which method should you use?（）

A.Sub Zones
B.Standard Primary Zones
C.Secondary Zones
D.Active DirectoryIntegrated Zones 

A.Configure each server running Routing and Remote Access as a RADIUS Client.  
B.Add a Remote Access policy to each server running Routing and Remote Access. Configure the Access method as VPN access.  
C.Add a Remote Access policy to each server running Routing and Remote Access. Configure the Access method as dialup access.  
D.Add a Remote Access policy to each server running Routing and Remote Access. Configure the Access method as wireless access.  

A.Create a Stub Zone in each domain of the root zone.  
B.Create a _msdcs subdomain in a new zone on the root domain. 
C.Replicate the _msdcs subdomain across the roor domain.  
D.Replicate the _msdcs subdomain to the ForestDNS zone applciation partition.  
E.Configure a zone transfer of the _msdcs subdomain to secondary zone on all DNS servers in the forest.