Unit 2

3. A protocol for sending packets quickly with minimal error-checking and no resending of dropped packets
4. Can continue to function even in the event individual component failures. This is important because elements of complex systems like a computer network fail at unexpected time, often in groups.
7. Information passed through the internet in packets.
8. A group of computing devices and programs working together for a common purpose.
11. A protocol for sending packets that does error-checking to ensure all packets are received and properly ordered
13. the series of connections between computing devices on a network starting with a sender and ending with a receiver.
14. The unique number assigned to each device on the internet.
15. A type of computer that forwards data across a network
16. The inclusion of extra components so that a system can continue to work even if individual components fail, for example by having more than one path between any two connected devices in a network.

1. A group of interconnected computing devices capable of sending or receiving data.
2. an agreed-upon set of rules that specify the behavior of some system
5. A protocol for sending data across the internet that assigns unique numbers (IP address) to each connected device
6. A chunk of data sent over a network. Larger messages are divided into packets that may arrive at the destination in order, out-of-order, or not at all.
9. The maximum amount of data that can be sent in fixed amount of time usually measured in bits per second.
10. A machine that can run a program, including computers, tablets. Servers, routers, and smart sensors.
12. Data added to packets to help route them through the network and reassemble the original message.