CompTIA Security Plus Mock Test Q199

An active directory setting restricts querying to only secure connections. Which of the following ports should be selected to establish a successful connection?

A. 389
B. 440
C. 636
D. 3286

Correct Answer: C
Section: Network Security

Explanation:
Port 636 is used for secure LDAP (LDAPS).

Incorrect Options:
A: Port 389 is used for LDAP.
B: Port 440 is not used for secure Active Directory connections.
D: Port 3286 is not used for secure Active Directory connections.

Reference:
Dulaney, Emmett and Chuck Eastton, CompTIA Security+ Study Guide, 6th Edition, Sybex, Indianapolis, 2014, p. 147
https://en.wikipedia.org/wiki/List_of_TCP_and_UDP_port_numbers