An organization is centralizing support functions and requires the ability to support a remote user's desktop. Which of the following technologies will allow a technician to see the issue along with the user?
MSRA is Microsoft Remote Assistance, which would satisfy the prompt of the question to assist a user remotely. This allows multiple connections for troubleshooting / guidance purposes.
In the options in this specific question, VNC allows screen sharing which would also allow the technician to assist the user by seeing what is on their screen.
RDP is primarily used if you *were* the user attempted to connect to a remote workstation. It's primarily a single user connection.
VNC is essentially a screen-sharing protocol and is ideal for collaboration sessions which include presentations and training, as well as remote technical support functions. Each logged-in client can view and interact within the same session. RDP on the other hand does not allow concurrent logins and a new login will automatically force a previous session to log off.
There are alternatives to using RDP for remote access. For example, in macOS, you can use the Screen Sharing feature for remote desktop functionality. Screen Sharing is based on the Virtual Network Computing (VNC) protocol. You can use any VNC client to connect to a Screen Sharing server.
VNC itself is a freeware product with similar functionality to RDP. It works over TCP port 5900. Not all versions of VNC support connection security. macOS Screen Sharing is encrypted.
End of the question states "allow a technician to see the issue along with the user" - that's the key. RDP logs you in, but force logs off the current user. And they get a blank lock screen on their end so they can't see what you're doing. VNC allows screen sharing - use it all the time at work as desktop support.
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