What is the minimum number of DNS records that you should create manually?

Your network contains a single Active Directory domain named contoso.com. The domain contains a domain controller named DC1 that hosts the primary DNS zone for contoso.com.
All servers dynamically register their host names.
You install three new Web servers that host identical copies of your company’s intranet website. The servers are configured as shown in the following table.

You need to use DNS records to load balance name resolution queries for intranet.contoso.com between the three Web servers.
What is the minimum number of DNS records that you should create manually?
A. 1
B. 3
C. 4
D. 6

Correct Answer: B
Explanation/Reference:
To create DNS Host (A) Records for all internal pool servers
1.Click Stabrt, click All Programs, click Administrative Tools, and then click DNS.
2.In DNS Manager, click the DNS Server that manages your records to expand it.
3.Click Forward Lookup Zones to expand it.
4.Right-click the DNS domain that you need to add records to, and then click New Host (A or AAAA).
5.In the Name box, type the name of the host record (the domain name will be automatically appended).
6.In the IP Address box, type the IP address of the individual Front End Server and then select Create associated pointer (PTR) record or Allow anyauthenticated user to update DNS records with the same owner name, if applicable.
7.Continue creating records for all member Front End Servers that will participate in DNS Load Balancing.
For example, if you had a pool named pool1.contoso.com and three Front End Servers, you would create the following DNS entries:

Reference:
http://technet.microsoft.com/en-us/library/cc772506.aspx http://technet.microsoft.com/en-us/library/gg398251.aspx