JAMB - Commerce (2021 - No. 20)
The transmission of the telephone services from one country to another is facilitated by
international facility
internet services
interconnectivity
communication satellite
คำอธิบาย
A communication satellite creates a communication channel between a source transmitter and a receiver at different locations on Earth. It is the technology behind the transmission of telephone services that are put across various parts of the world.
It relays and amplifies radio telecommunication signals via a transponder