Your network consists of one Active Directory forest that contains 20 domain trees. All DNS servers
run Windows Server 2008 R2. The network is configured as an IPv4 network. Users connect to
network applications in all domains by using a NetBIOS name. You plan to migrate to an IPv6-
enabled only network. You need to recommend a solution to migrate the network to IPv6. The
solution must not require any changes to client computers. What should you recommend?
A.
On the DNS servers, configure GlobalNames zones.
B.
On the DNS servers, add all domain zones to the ForestDNSZones partition.
C.
On a new server, install and configure a Windows Server 2008 WINS server.
D.
On a new server, install and configure a Windows Server 2003 WINS server.
Explanation:
To migrate the network from IPv4-enabled to an IPv6-enabled only network without affecting any
client computer, you need to configure GlobalNames zones on the DNS servers running Windows
Server 2008. To help customers migrate to DNS for all name resolution, the DNS Server role in
Windows Server 2008 supports a special GlobalNames Zone (also known as GNZ) feature. The client
and server name resolution depends on DNS. A DNS Client is able to resolve single-label names by
appending an appropriate list of suffixes to the name. The correct DNS suffix depends on the
domain membership of the client but can also be manually configured in the advanced TCP/IP
properties for the computer. The problem occurs managing a suffix search list when there are many
domains. For environments that require both many domains and single-label name resolution of
corporate server resources, GNZ provides a more scalable solution. GNZ is designed to enable the
resolution of the single-label, static, global names for servers using DNS. WINS cannot be used
because it does not support IPv6 protocols and both are entering legacy mode for Windows Server
2008. ForestDNSZones partition cannot help to migrate a IPv4-enabled network to an IPv6-enabled
only network
Understanding GlobalNames Zone in Windows Server 2008
http://www.petri.co.il/windows-DNS-globalnames-zone.htm
Using GlobalNames Zone in Windows Server 2008
http://www.petri.co.il/using-globalnames-zone-window-server-2008.htm