The following is an explanation of the groups:
• Global Groups—A global group contains only individual user accounts (no groups) from the domain in which it is created. It can be added to a local group. After created, a global group can be assigned permissions and rights, either in its own domain or in any trusting domain. Global groups are available only on Windows NT Server domains. Domain Admins and Domain Users are two built-in groups.
• Local Groups—Local groups are created on a Windows NT Server or Workstation computer and are available only on that computer. A local group can contain user accounts or global groups from one or more domains. They cannot contain other local groups. Backup Operator and Guests are examples of built-in local groups.
The permissions for a user of multiple groups will be additive of all permissions except for NO PERMISSION, which overrides all other permissions.
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