Undersea Cables and Data Transfer

The video explains that while the internet is often thought to be in the cloud, it is actually supported by undersea cables that handle 99% of international data traffic. These cables, laid on the ocean floor, are crucial for global connectivity. Despite their small size, they are vulnerable to natural events and marine life. The concept of undersea cables dates back 157 years, evolving from early telegraph systems. Modern efforts continue to enhance connectivity, with companies exploring satellite and balloon-based internet solutions, but undersea cables remain vital.

What percentage of international data traffic is handled by undersea fiber optic cables?

• 50%

• 75%

• 99%

• 100%

What is one of the protective layers used on undersea cables?

• Plastic

• Petroleum jelly

• Metal

• Rubber

What natural event can damage undersea cables?

• Tsunamis

• Volcanic eruptions

• Earthquakes

• Hurricanes

How are undersea cables naturally buried?

• By fish

• By ocean currents

• By machines

• By divers

How long have undersea cables been in use?

• 200 years

• 157 years

• 100 years

• 50 years

What was used to coat the first undersea cables?

• Petroleum jelly

• Exotic tree sap

• Plastic

• Rubber

What was one of the first uses of electric telegraphs?

• Sending emails

• Broadcasting news

• Signaling trains

• Connecting continents

What is a modern alternative to undersea cables for internet delivery?

• Radio waves

• Satellites

• Fiber optic cables

• Cell phone towers

Which companies are investing in undersea cables for fast data transfer?

• Apple and IBM

• Facebook and Google

• Netflix and Hulu

• Amazon and Microsoft

Why are undersea cables still preferred for international data transfer?

• They are easier to maintain

• They are more reliable

• They are faster

• They are cheaper