Port 3389/TCP is used by which remote desktop protocol?

Port 3389/TCP is used by which remote desktop protocol?

• A. SSH
• B. Telnet
• C. VNC
• D. RDP and WBT

Answer: (D)

Port numbers identify the service used for remote access, and 3389 is the default TCP port for Microsoft Remote Desktop Protocol. This protocol provides a remote graphical session, allowing a user to view and interact with a Windows desktop remotely. The term WBT (often referring to Windows-based Terminal/Windows Terminal Services context) is historically tied to how Windows offers remote desktop-style services, which use the same RDP underlying mechanism. That makes “RDP and WBT” the best pairing for this port, since both are associated with remote Windows desktop access. In contrast, SSH uses port 22, Telnet uses port 23, and VNC typically uses 5900 (or other configured ports), not 3389.

Port numbers identify the service used for remote access, and 3389 is the default TCP port for Microsoft Remote Desktop Protocol. This protocol provides a remote graphical session, allowing a user to view and interact with a Windows desktop remotely. The term WBT (often referring to Windows-based Terminal/Windows Terminal Services context) is historically tied to how Windows offers remote desktop-style services, which use the same RDP underlying mechanism. That makes “RDP and WBT” the best pairing for this port, since both are associated with remote Windows desktop access. In contrast, SSH uses port 22, Telnet uses port 23, and VNC typically uses 5900 (or other configured ports), not 3389.