Practice Quiz

CompTIA: Advanced Security Practitioner (CASP) Exam Prep

Category - Network

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Which of the following TCP/IP ports does the LDAP protocol use?
  1. 20
  2. 389
  3. 23
  4. 80
Explanation
Answer: B - LDAP uses TCP port 389 for its operation.

Key Takeaway: LDAP (Lightweight Directory Access Protocol) is an application protocol for querying and modifying directory services running over TCP/IP. A client starts an LDAP session by connecting to an LDAP server known as the Directory System Agent (DSA) using the default TCP port 389. The client then sends an operation request to the server and the server sends responses in return.
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