Your network contains an Active Directory domain named contoso.com. All domain controllers run Windows
Server 2012.
The domain contains an Edge Server named Server1. Server1 is configured as a DirectAccess server. Server1
has the following settings:
Internal DNS name: Server1.contoso.com
External DNS name: dal.contoso.com
Internal IPv6 address: 2002:cla8:6a:3333::1
External IPv4 address:65.55.37.62
Your company uses split-brain DNS for the contoso.com zone.
You run the Remote Access Setup wizard as shown in the following exhibit. (Click the Exhibit button.)
You need to ensure that client computers on the Internet can establish DirectAccess connections to Server1.
Which additional name suffix entry should you add from the Remote Access Setup wizard?
A.
A Name Suffix value of Server1.contoso.com and a blank DNS Server Address value
B.
A Name Suffix value of dal.contoso.com and a blank DNS Server Address value
C.
A Name Suffix value of Server1.contoso.com and a DNS Server Address value of 65.55.37.62
D.
A Name Suffix value of dal.contoso.com and a DNS Server Address value of 65.55.37.62
Explanation:
* In a non-split-brain DNS environment, the Internet namespace is different from the intranet namespace. For
example, the Contoso Corporation uses contoso.com on the Internet and corp.contoso.com on the intranet.
Because all intranet resources use the corp.contoso.com DNS suffix, the NRPT rule for corp.contoso.com
routes all DNS name queries for intranet resources to intranet DNS servers. DNS name queries for names with
the contoso.com suffix do not match the corp.contoso.com intranet namespace rule in the NRPT and are sent
to Internet DNS servers.
* Split-brain DNS is a configuration method that enables proper resolution of names (e.g., example.com) from
both inside and outside of your local network.
Note: For split-brain DNS deployments, you must list the FQDNs that are duplicated on the Internet and intranet
and decide which resources the DirectAccess client should reach, the intranet version or the public (Internet)
version. For each name that corresponds to a resource for which you want DirectAccess clients to reach the
public version, you must add the corresponding FQDN as an exemption rule to the NRPT for your DirectAccess
clients. Name suffixes that do not have corresponding DNS servers are treated as exemptions.