You create a standard primary zone for contoso.com.
You need to specify a user named Admin1 as the person responsible for managing the zone.
What should you do? (Each correct answer presents acomplete solution. Choose two.)

A.
Open the %Systemroot\System32\DNS\Contoso.com.dnsfile by using Notepad and change all instances of
“hostmaster.contoso.com” to “admin1.contoso.com”.

B.
From DNS Manager, open the properties of the Start of Authority (SOA) record ofcontoso.com, Specify
admin1.contoso.com as the responsible person.

C.
Open the %Systemroot\System32\DNS\Contoso.com.dnsfile by using Notepad and change all instances of
“hostmaster@contoso.com” to “adminl@contoso.com”.

D.
From DNS Manager, open the properties of the Start of Authority (SOA) record ofcontoso.com.
Specify admin1@contoso.com as the responsible person.

Explanation:
You can use Notepad to edit the dns file, but the email address of the person responsible for this zone must be
listed with a “.”, instead of a “@”. That’s why C is wrong here.
Reference 1:
http://technet.microsoft.com/en-us/library/cc816941.aspx
To modify the start of authority (SOA) resource record for a zone using the Windows interface
1. Open DNS Manager.
2. In the console tree, right-click the applicable zone, and then click Properties.
3. Click the Start of Authority (SOA) tab.
4. As needed, modify properties for the start of authority (SOA) resource record.
5. Click OK to save the modified properties.
Reference 2:
http://technet.microsoft.com/en-us/library/dd197495.aspx
The SOA resource record contains the following information:
SOA resource record fields
Responsible person
The e-mail address of the person responsible for administering the zone. A period (.) is used instead of an at
sign (@) in this e-mail name.
(…)