Your network contains a server named Server1 that runs a Server Core installation of Windows Server 2008 R2. Server1 is configured as a DNS server. You need to ensure that Server1 only resolves name queries from IPv6 clients. What should you do?
A.
Run netsh.exe and specify the dnsclient parameter.
B.
Run dnscmd.exe and specify the /config parameter.
C.
Run dnscmd.exe and specify the /resetlistenaddresses parameter.
D.
Run netsh.exe and specify the interface parameter.
Explanation:
To configure your DNS server to listen over IPv6, do the following:
Install Windows Support Tools.
For more information, see Install Windows Support Tools
Open Command Prompt.
Type the following command:
dnscmd /config /EnableIPv6 1
Restart the DNS Server service.
For more information, see Start or stop a DNS server.
http://technet.microsoft.com/en-us/library/cc783049(WS.10).aspx
The question asks for the command “that Server1 ONLY resolves name queries from IPv6 clients.” The answer given above does not limit resolution of IPv4 queries, just includes IPv6. Is there a dnscmd /config parameter that disables IPv4 resolution?
To restrict a DNS server to listen only on selected addresses using a command line
Open an elevated command prompt.
Type the following command, and then press ENTER:
dnscmd /ResetListenAddresses [ …]