Active directory and are critical in centralizing control of authentication and security policies in a domain environment.

DNS(Domain Name Services) is the correct answer.

Explanation:

DNS is the type of directory system which is distributed that finds the solution of a hostname which is readable by the human being. It is also critical in centralizing control of the confirmation and policies of the security in the environment of the domain with Active Directory. That's why the following answer is correct.

no, it just either gets automatically 5 points to give away, or u can choose how many points u want to give but, the answerer only gets half

answer; (a) brake pedal is depressed;