Can AD be installed without installed DNS?

Yes AD can be installed without installed DNS on that server, but you need some form of DNS for AD to work. It can be BIND or other DNS, but you do need DNS…even if it is not Microsoft DNS. Most people use Microsoft DNS on their internal AD networks.
For More Information Please Refer:
https://social.technet.microsoft.com/Forums/windowsserver/en-US/2687ccc7-fcab-4858-bc10-54ad846188ce/is-dns-server-required-to-install-active-directory
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