Connecting Across Continents: The Evolution of Video Calls

The video explores the evolution of communication technology, focusing on video conferencing and the role of the Internet. It highlights the transition from satellite-based communication to optical fibre technology, which enables real-time video calls. The video also explains how optical fibres work, their capacity, and their global deployment, allowing seamless communication across continents.

What is one of the main benefits of video conferencing today compared to the past?

• It requires specialized equipment.

• It allows for instant communication over long distances.

• It is only available in certain countries.

• It is more expensive.

What was a major drawback of satellite-based communication systems?

• They were too fast.

• They had a significant delay.

• They could not transmit voice.

• They were only available at night.

Why are optical fibres preferred over copper cables for transmitting images?

• They are cheaper.

• They can transmit more data at higher speeds.

• They are easier to install.

• They are more colorful.

How do optical fibres transmit information?

• Using electrical signals.

• Using sound waves.

• Using magnetic fields.

• Using light.

What is a unique feature of optical fibres in terms of data transmission?

• They require a lot of power to operate.

• They are only used for short distances.

• They can transmit multiple light beams of different colors simultaneously.

• They can only transmit one connection at a time.

Where are optical fibre networks typically deployed?

• On the surface of roads.

• In outer space.

• Underground and under the ocean.

• In the air.

How do mobile phones use optical fibre networks for video calls?

• By directly connecting to the fibre.

• By using radio waves connected to antenna relays.

• By using satellite signals.

• By converting light signals to sound.