Understanding the Internet

The video explains how the internet works, focusing on data transmission from data centers to devices. It compares satellite and optical fiber methods, highlighting the efficiency of optical fibers. The role of IP addresses and DNS in routing data is discussed, along with the process of data packet transmission. The video also covers the infrastructure and protocols that ensure efficient data flow.

Why is using satellites for internet data transmission not ideal?

• They are not secure enough for data transmission.

• They are too expensive to maintain.

• They cause significant delays due to long travel distances.

• They cannot handle large amounts of data.

What is the primary role of optical fiber cables in internet data transmission?

• To provide wireless internet access.

• To transmit data over long distances efficiently.

• To store data temporarily.

• To convert data into electrical signals.

How is an IP address similar to a home address?

• It is visible to everyone on the internet.

• It is used to send physical mail.

• It changes frequently.

• It uniquely identifies a device on the internet.

What is the purpose of a DNS server?

• To convert domain names into IP addresses.

• To store website data.

• To manage internet traffic.

• To provide internet security.

Why are domain names used instead of IP addresses?

• They are more reliable.

• They are more secure.

• They are easier to remember.

• They are faster to use.

What is the role of a router in data transmission?

• To store data packets.

• To manage DNS requests.

• To convert light signals into electrical signals.

• To provide wireless internet access.

How do optical fiber cables reach your home?

• Through satellite connections.

• Through wireless signals.

• Via underground tunnels.

• Stretched across the seabed to your doorstep.

What makes internet data transmission efficient?

• The reliance on wireless signals.

• The use of large data packets.

• The division of data into small packets.

• The use of multiple IP addresses.

What happens if a data packet fails to reach its destination?

• The entire data transmission is halted.

• The packet is ignored.

• An acknowledgment is sent to resend the packet.

• The packet is rerouted automatically.

What is the function of protocols in internet data transmission?

• To encrypt data packets.

• To provide internet access.

• To set rules for data packet management.

• To increase data packet size.