Advice on setting up Server 03 network

This is my first time trying this in VMWare so I'm just learning as I go. I have my DC set up and I also have that same VM set up as my DHCP server. Should I set up another VM as a DNS server as well? Or can I just have my DC set up as my DNS too?
Comments
Here's some additional reading: How DNS Support for Active Directory Works: Active Directory
Made an exception for echo requests. Now it's working.
What he said ^^^