Which port is commonly used by the Remote Desktop Protocol?

Which port is commonly used by the Remote Desktop Protocol?

• A. 3389
• B. 22
• C. 80
• D. 443

Answer: (A)

Remote Desktop Protocol relies on a dedicated TCP port by default, which is the one most commonly associated with and expected for RDP connections. That default port is what makes it the best answer here, because knowing this port helps you configure firewalls and access controls around RDP. The other ports correspond to different services you might see on a network—SSH for secure remote login, HTTP for web traffic, and HTTPS for secure web traffic—so they’re not the standard port used by RDP. While you can reconfigure RDP to listen on another port, using the default port is the common, recognized choice, and it’s important to secure it properly (for example, by restricting exposure to the internet and using VPN or a gateway).

Remote Desktop Protocol relies on a dedicated TCP port by default, which is the one most commonly associated with and expected for RDP connections. That default port is what makes it the best answer here, because knowing this port helps you configure firewalls and access controls around RDP. The other ports correspond to different services you might see on a network—SSH for secure remote login, HTTP for web traffic, and HTTPS for secure web traffic—so they’re not the standard port used by RDP. While you can reconfigure RDP to listen on another port, using the default port is the common, recognized choice, and it’s important to secure it properly (for example, by restricting exposure to the internet and using VPN or a gateway).