The Internet: Packets, Routing & Reliability

Who is Lynn Root?

• A network technician

• A teacher

• A professional musician

• A software engineer at Spotify

Answer explanation

Lynn Root is a software engineer at Spotify, which is the correct choice among the given options.

What is the main principle of the internet mentioned in the text?

• Direct connections

• Complexity

• Reliability

• Speed

Answer explanation

The main principle of the internet mentioned in the text is reliability, emphasizing the importance of consistent and dependable connections.

How does data travel on the internet?

• In large containers

• Directly from sender to receiver

• Via postal service

• In packets

Answer explanation

Data travels on the internet in packets, which are small units of data that are transmitted individually and reassembled at the destination, ensuring efficient and reliable communication.

What role do routers play on the internet?

• They store data

• They create data packets

• They provide internet to homes

• They act like traffic managers

Answer explanation

Routers act like traffic managers on the internet by directing data packets to their intended destinations, helping to efficiently navigate network traffic.

What does TCP stand for?

• Transmission Control Protocol

• Total Control Protocol

• Transfer Command Program

• Traffic Control Policy

Answer explanation

TCP stands for Transmission Control Protocol, making it the correct choice among the options provided.

What analogy is used to explain how data packets travel?

• A flock of birds

• A train

• A car journey

• A stream of water

Answer explanation

The correct analogy used to explain how data packets travel is a car journey, where data packets are like cars traveling on roads to reach their destination.

What happens if a data packet does not arrive at its destination?

• The internet stops working

• The receiver sends a reward

• It is resent

• It is ignored

Answer explanation

If a data packet does not arrive at its destination, it is resent to ensure successful delivery.

What makes the internet fault tolerant?

• Manual control of data flow

• Direct connections

• Multiple paths for sending packets

• A single path for all data

Answer explanation

The internet is fault-tolerant due to having multiple paths for sending packets, which allows for rerouting in case of failures.

How is a very large image sent over the internet?

• In one large packet

• In hundreds or thousands of smaller packets

• Via a special cable

• It cannot be sent

Answer explanation

A very large image is sent over the internet in hundreds or thousands of smaller packets to efficiently transmit the data.

What does the internet rely on to function?

• A single company

• Paper maps

• Agreed-upon standards

• One type of device

Answer explanation

The internet relies on agreed-upon standards to function, ensuring that different devices and systems can communicate effectively.