You are an Enterprise administrator for contoso.com. The corporate network of the company consists of a single Active Directory forest called contoso.com. The forest contains five domains. The domain controllers on the network run Windows Server 2008 and have the DNS server role installed.
You company has decided to replace a legacy Windows Internet Name Service (WINS) environment with a DNS-only environment for name resolution.
Which of the following options would you choose to plan the infrastructure for name resolution to support IPv4 and IPv6 environments, enable single-label name resolution across all domains, and minimizing the amount of NetBIOS over TCP/IP (NetBT) traffic on the network?
A.
Implement custom Active Directory replication partition and modify each DNS zone to replicate as part of it
B.
Configure each DNS zone to perform a WINS forward lookup.
C.
Configure each DNS zone to replicate to each DNS server in the forest.
D.
Configure a GlobalNames zone on each domain controller.
E.
None of the above.
Explanation:
To replace a legacy Windows Internet Name Service (WINS) environment with a DNS-only environment for name resolution with given requirements, you need to configure a GlobalNames zone on each domain controller.
The DNS Server Role in Windows Server 2008 now supports the GlobalNames Zone. This has been introduced to assist organizations to move away from WINS and allow organizations to move to an all-DNS environment. Unlike WINS, The GlobalNames zone is not intended to be used for peer-to-peer name resolution.
The GlobalNames Zone (GNZ) is used to hold single-label names. The GlobalNames zone is most commonly used to hold CNAME resource records to map a single-label name to a Fully Qualified Domain Name (FQDN). GNZ provides single-label name resolution whereas WINS provides NetBIOS resolution. If you plan to retire WINS or plan to deploy IPv6 only in your environment, all name resolution will rely on DNS. It supports dual IPv4 and IPv6 environment and use only DNS for name resolution.
Reference: Understanding the New GlobalNames Zone Functionality in Windows Server2008
http://johnpolicelli.wordpress.com/2008/01/15/understanding-the-new-globalnames-zone-in-windows-server-2008/
Reference: DNS Server GlobalNames Zone Deployment / How GNZ Resolution Works
http://download.microsoft.com/download/e/2/0/e2090852-3b7f-40a3-9883-07a427af1560/DNS-GlobalNames-Zone-Deployment.doc