Ctrl Alt Del for Windows Remote Desktop

In the Windows Remote Desktop (RDP)  If you want to send Ctrl+Alt+Del (Control, Alternate, Delete) keys from keyboard to the remote computer (in order to get to the task manager, switch user, change password, lock computer, etc), you cannot use Ctrl+Alt+Del keys, because it is not sent to the remote computer, it affect to the local computer, not to remote computer.

To send Ctrl+Alt+Del to the remote computer in Windows Remote Desktop, use combination of these keys :
Ctrl+Alt+End for RDP