You have a hosted Exchange organization. All servers in the organization have Exchange
Server 2010 Service Pack 1 (SP1) installed.
Select the proper DNS record to create when you deploy federating delegation (choose all
that apply)
A.
A record
B.
MX (mail exchange record)
C.
MG (mail group record)
D.
TXT record
Explanation:
Create a TXT record for federated delegation.The A record should actually be a CNAME, according to Technet. However, in the strictest
sense, an A record would need to have been created in DNS to map the IP to the external
server name, then the CNAME record would be created so the federated partner can access
your network. For example:
A record maps server IP to company name (i.e., 64.4.6.100 to contoso.com).
CNAME sets next record for discovery (i.e., autodiscover.contoso.com).
It is unlikely that your exam will give you the option of an A record, but if there is no mention
of a CNAME go with A and TXT. Otherwise, always go with CNAME and TXT.http://technet.microsoft.com/en-us/library/ff601760.aspx