LDAP in non-secure form uses which port?

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Prepare for the CPSA Port Numbers Exam with quizzes on port numbers, services, and protocols. Each question is accompanied by hints and detailed explanations. Get exam-ready with our comprehensive study tool!

Multiple Choice

LDAP in non-secure form uses which port?

Explanation:
LDAP in non-secure form uses port 389. This is the default TCP port for LDAP when encryption isn’t used. When you enable encryption, you can switch to LDAPS on port 636 or upgrade an existing connection on port 389 with StartTLS. The other ports listed correspond to different services: 636 is used for LDAPS (LDAP over TLS), 143 is for IMAP, and 500 is commonly used for IPsec/IKE, not LDAP.

LDAP in non-secure form uses port 389. This is the default TCP port for LDAP when encryption isn’t used. When you enable encryption, you can switch to LDAPS on port 636 or upgrade an existing connection on port 389 with StartTLS. The other ports listed correspond to different services: 636 is used for LDAPS (LDAP over TLS), 143 is for IMAP, and 500 is commonly used for IPsec/IKE, not LDAP.

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