What is the default port for Microsoft SQL Server?

What is the default port for Microsoft SQL Server?

• A. 1900
• B. 1433
• C. 1813
• D. 1521

Answer: (B)

Microsoft SQL Server uses port 1433 as the default TCP port for the default instance. That means, unless you’ve configured a different port or are connecting to a named instance (which can use a dynamic port), connections typically go to 1433. The other numbers belong to entirely different services—1900 is commonly associated with discovery protocols, 1813 is used for RADIUS accounting, and 1521 is the Oracle database listener port—so they aren’t related to SQL Server’s default listening port. In short, 1433 is the standard default for SQL Server.

Microsoft SQL Server uses port 1433 as the default TCP port for the default instance. That means, unless you’ve configured a different port or are connecting to a named instance (which can use a dynamic port), connections typically go to 1433. The other numbers belong to entirely different services—1900 is commonly associated with discovery protocols, 1813 is used for RADIUS accounting, and 1521 is the Oracle database listener port—so they aren’t related to SQL Server’s default listening port. In short, 1433 is the standard default for SQL Server.