Common Network Port Numbers

By Chris Anderson · Updated Jul 10, 2026

Questions30
Passing Score70%
Format63% Multiple Choice
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Question catalog for this preview

Catalog listing of the 5 preview questions for this quiz.

Question 1

Which of the following ports are associated with email protocols? (Select ALL that apply)

Answer choices

  • A. 25

  • B. 80

  • C. 110

  • D. 143

  • E. 443

Question 2

Which port is used by RDP (Remote Desktop Protocol)?

Answer choices

  • A. 3306

  • B. 3389

  • C. 5900

  • D. 8080

Question 3

What port does LDAP (Lightweight Directory Access Protocol) use?

Answer choices

  • A. 88

  • B. 389

  • C. 443

  • D. 636

Question 4

Match each database system to its default port.

Question 5

Match each protocol to its default port number.