The Internet: Packets, Routing, & Reliability (Code.org video)

What is the role of routers in the internet?

• They encrypt data for security.

• They provide direct connections between computers.

• They store data permanently.

• They act like traffic managers to keep packets moving smoothly.

How does data travel on the internet?

• Through direct, dedicated lines.

• In a fixed path from source to destination.

• In packets that may take different routes.

• Only through wireless connections.

What is a key principle of the internet that ensures data is sent reliably?

• User-friendliness

• Cost efficiency

• Fault tolerance

• Speed

What does TCP stand for?

• Transfer Control Process

• Transport Communication Protocol

• Transmission Control Protocol

• Transmission Communication Path

What happens if some packets are missing when data is sent?

• The data is discarded.

• TCP requests the missing packets to be resent.

• The data is sent again from the beginning.

• The missing packets are ignored.

What is the function of TCP in data transmission?

• It provides a direct connection between devices.

• It compresses data to save bandwidth.

• It manages the sending and receiving of data packets.

• It encrypts data for security.

What does it mean for the internet to be scalable?

• It becomes slower as more devices are added.

• It can only support a limited number of devices.

• It requires more resources as it grows.

• It can grow and support more devices without interrupting service.

What is the role of routers in choosing paths for data packets?

• They choose the path based on the shortest distance.

• They choose paths randomly.

• They choose the cheapest available path based on time and other factors.

• They choose the most expensive path.

What happens to packets that arrive out of order?

• They are sent back to the source.

• They are reassembled in order at the destination.

• They are discarded.

• They are ignored.

What is the purpose of breaking down large data into packets?

• To reduce the size of the data.

• To ensure data can be sent over different routes.

• To encrypt the data.

• To make data transmission faster.