how do undersea cables transfer data from and to millions of people simultaneously?

Question

I understand it’s just signals and 1s and 0s but don’t the signals overlap in the undersea cables?

In: Engineering

Answer 1

It’s like how a highway can let thousands of people get to different at the same time.

The data is sent in packets for each person using it. Think of those like the cars. But there are lots of lanes and all the cars aren’t in the same place at the same time. The cars are travelling at almost the speed of light so they don’t stay long either.

Lots of lanes, fast cars.