What are the modes of authentication in SQL server database.
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Builtin/Administrator
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Windows authentication
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Mixed mode
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SQL authentication
B,C
Correct answer
Explanation
SQL Server supports two authentication modes: Windows Authentication (uses Windows Active Directory accounts) and Mixed Mode (allows both Windows Authentication and SQL Server authentication). 'Builtin/Administrator' is not a mode name. 'SQL authentication' alone refers to the SQL Server-specific authentication used within Mixed mode, not a standalone mode.