Which of the following is not a best practice for performing new forest deployments?

Question 8 options:

	Whenever possible, keep the design of your forest simple by having only one domain.
	Ensure that each domain has at least two domain controllers to provide fault tolerance and ensure availability. Only one of these domain controllers needs to be writable; the other can be a read-only domain controller (RODC).
	Install only the AD DS and DNS Server roles on your domain controllers; do not install any other server roles.
	Make sure that each site in your domain has a sufficient number of domain controllers to service the needs of users for logging on and accessing network resources.