Final answer:
The Ethernet connection is provided by a network switch for data transfer and control signals between the Monopulse Secondary Surveillance Radar (MSSR) and the radar control panel (RCP) at the radar site.
Step-by-step explanation:
The Ethernet connection from the Monopulse Secondary Surveillance Radar (MSSR) to the site control and data interfaces (SCDI) is provided by a network switch.
The network switch acts as a central hub that connects the MSSR and the radar control panel (RCP) at the radar site. It allows for data transfer and control signals to be transmitted through the Ethernet cables, enabling communication between the MSSR and RCP.
The use of Ethernet connection provides a reliable and high-speed interface for the control and data exchange between the MSSR and RCP, ensuring efficient operation of the radar system.