What are the operational roles for DC (Domain controller) and ADC ( Additional Domain Controller)?

Asked 08-Oct-2018
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 What are the operational roles for DC (Domain controller) and ADC ( Additional Domain Controller)?



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  • Within a computer network domain, a domain controller (DC) is a server computer that responds to security authentication requests. It authenticates users, saves account information, and enforces a domain's security policy.
  • An extra domain controller (ADC) is a domain controller that exists in a given environment (DC, CDC, and GCDC). It functions similarly to a backup Domain Controller in that if the primary Domain Controller fails, the Additional Domain Controller (ADC) will assist in maintaining network stability.
  • DC (Domain controller) has the following operational roles:
  • Master Schema for Domain Naming Infrastructure Master RID Master PDC Emulator Master RID Master RID Master RID Master RID Master RID Master RID Master
  • The ADC (Additional Domain Controller) has the following operational roles:
  • RID Master Infrastructure Master PDC Emulator


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