Whats is FSMO role in Active directory.Describe how it works .

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FSMO (Flexible Single Master Operations) roles are specialized domain controller tasks in Active Directory.

There are five FSMO roles: Schema Master, Domain Naming Master, RID Master, PDC Emulator, and Infrastructure Master.
Schema Master: responsible for maintaining the Active Directory schema.
Domain Naming Master: responsible for adding or removing domains in the forest.
RID Master: responsible for allocating RIDs (Relative Identifiers) to domain controllers.
PDC Emulator: responsible for backward compatibility with older versions of Windows and time synchronization.
Infrastructure Master: responsible for updating group-to-user references within a domain.
Each FSMO role can only be held by one domain controller at a time.
If a domain controller holding an FSMO role fails, another domain controller must be manually assigned the role.
FSMO roles are critical to the proper functioning of Active Directory and should be carefully managed.