CompTIA Security+ Question G-65

Which of the following protocols is the security administrator observing in this packet capture?
12:33:43, SRC 192.168.4.3:3389, DST 10.67.33.20:8080, SYN/ACK

A. HTTPS
B. RDP
C. HTTP
D. SFTP

Answer: B

Explanation:
Remote Desktop Protocol (RDP) is a proprietary protocol developed by Microsoft, which provides a user with a graphical interface to connect to another computer over a network connection. Example of RDP tracing output: No. Time Delta Source Destination Protocol Length Info 5782, 2013-01-06 09:52:15.407, 0.000, SRC 10.7.3.187, DST 10.0.107.58, TCP, 62, 3389 > 59193 [SYN, ACK]