Scaling Issues in Windows NT

In larger Windows NT environments, you can have many domains. Windows NT allows information sharing between domains with the use of trusted domains. A trusted domain grants or denies access to clients without having to manage each user individually. Each domain can exchange information and form a trust relationship. Based on these trust relationships, end users from each domain can be allowed or denied access. Creating trust relationships allows secure data to flow between different domains and ensures adequate security for data files and application files in any Windows-based network.

Windows NT supports several domain models, including the following:

• Single domain—Used in small networks.

• Global domain—Automatically trusts every domain.

• Master domain—Trusted by all remote domains but does not trust the remote domains.

• Multiple master domains—Used in large networks where the master domain is trusted by other master domains, which in turn trust smaller domains.

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