Which statement describes the Global Catalog's role in AD DS?

Which statement describes the Global Catalog's role in AD DS?

• A. It is a domain database
• B. It is a partial, read-only, searchable copy of all objects in the forest
• C. It is a DNS zone
• D. It is a backup of AD DS

Answer: (B)

The Global Catalog is a forest-wide directory index. It holds a partial, read-only replica of every object in the forest, with just enough attributes to support fast searches and cross-domain lookups. This design lets you locate users, groups, and resources across any domain without querying every domain controller, and it also supports logon processes across the forest efficiently. It’s not the domain’s primary database (that’s the AD DS database), not a DNS zone, and not a backup, which is why the description that fits best is a partial, read-only, searchable copy of all objects in the forest.

The Global Catalog is a forest-wide directory index. It holds a partial, read-only replica of every object in the forest, with just enough attributes to support fast searches and cross-domain lookups. This design lets you locate users, groups, and resources across any domain without querying every domain controller, and it also supports logon processes across the forest efficiently. It’s not the domain’s primary database (that’s the AD DS database), not a DNS zone, and not a backup, which is why the description that fits best is a partial, read-only, searchable copy of all objects in the forest.