Which component receives the computed satellite updates from the Master Control Station and forwards them toward the satellites?

• A. Master Control Station
• B. Ground Control Station
• C. Remote Monitoring Stations
• D. Upload Stations

Answer: (D)

Updates computed at the Master Control Station are sent into the uplink path of the ground segment, and the role of the Upload Stations is to receive those updates and forward them toward the satellites. They convert the planned commands into radio transmissions and handle the actual communication link to the spacecraft. The Master Control Station is the source of the updates, not the relay; the Ground Control Station oversees operations more broadly but doesn’t perform the specific forwarding to the satellites. Remote Monitoring Stations focus on receiving telemetry, not issuing new commands. So, the component that takes the MCS’s updates and pushes them toward the satellites is the Upload Stations.