John is a network administrator and he is configuring the Active Directory roles in the primary domain controller (DC) server. Whilst configuring the Flexible Single Master Operation (FSMO) roles in the primary DC, he configured one of the roles to synchronize the time among all the DCs in an enterprise. The role that he configured also records the password changes performed by other DCs in the domain, authentication failures due to entering an incorrect password, and processes account lockout activities.
Which of the following FSMO roles has John configured?
A . RID master
B . PDC emulator
C . Domain naming master
D . Schema master
Answer: B