A user calls the help desk to report an issue accessing a new application on a Windows PC. When the user tries to launch the application, an error message appears and then quickly disappears before…

FTP (File Transfer Protocol) is used for transferring files between hosts and cannot provide remote desktop access or visibility into a running application.

RDP gives the technician a live graphical view of and control over the user's Windows session. By remotely observing the screen when the application is launched, the technician can read the transient error message, capture it, and diagnose the root cause - something impossible to do over a phone call or with other protocols.

SNMP (Simple Network Management Protocol) is used for monitoring and managing network devices and does not provide access to a user's desktop session.

SSH provides encrypted command-line terminal access, which would not show the graphical Windows application or its error dialog.