Answer:
RDP port 3389
.
Explanation:
A Windows user has informed the helpdesk with such an issue that requires the operator to link to the remote server through Remote Assistance to access the user's screen with a very comprehensive and ambiguous error message. Almost any attempt made by the operator to link to the remote access concludes in a message that says that the connection has been denied. To make this link, the following protocol and the port number combinations must be enabled on the firewall of the remote connection.
There are multiple devices that emit radio waves. The most obvious is are radiod and microwaves (yes, the food cooker). Wireless applicances also emit radio waves. But don't confuse everything to use microwaves. Some applicances use frequencies instead of radio waves. Some applicances that use frequencies are toy control remotes and a garage door.
I hope this helps! Please make sure ask me if you need more clarity!