A user is trying to use Remote Desktop to connect to another computer on the LAN. Theconnection fails. The technician opens up a command prompt and types the following: “telnetcomputernamE. 3389” and also gets the same error message. Which of the following is the MOSTlikely cause of this error, assuming that the OS firewall has been disabled?（）
A
The antivirus software is blocking the incoming connection.
B
The ISP is blocking Remote Desktop at their end.
C
The RDP connection has been configured to use a non-standard port.
D
The telnet service has not been installed.
参考答案：
C
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