On which default TCP port does Microsoft SQL Server listen for client connections?

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CREST CPSA (Practitioner Security Analyst)

Databases

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PassNova has 14 CREST CPSA (Practitioner Security Analyst) practice questions on Databases, each with a clear explanation. A 15-question taster is free with no sign-up; the full bank is part of PassNova Premium. Updated for 2026.

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Databases: example questions & answers

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On which default TCP port does Microsoft SQL Server listen for client connections?
- A1433✓
- B3306
- C5432
- D1521
Answer: Microsoft SQL Server's default instance listens on TCP 1433 (with the SQL Server Browser on UDP 1434). Oracle's listener defaults to 1521, MySQL to 3306 and PostgreSQL to 5432.

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