Comptia Security Plus Mock Test Q129

An information bank has been established to store contacts, phone numbers and other records. A UNIX application needs to connect to the index server using port 389. Which of the following authentication services should be used on this port by default?

A. RADIUS
B. Kerberos
C. TACACS+
D. LDAP

Correct Answer: D
Section: Network Security

Explanation:
LDAP makes use of port 389.

Incorrect Answers:
A: RADIUS makes use of various UDP ports.
B: Kerberos makes use of port 88.
C: TACACS makes use of TCP port 49 by default.

References:
http://en.wikipedia.org/wiki/List_of_TCP_and_UDP_port_numbers