A computing device is a physical artifact that can run a program.

Computers are capable of sending and receiving data

A packet is a small amount of data and sent over a network.

A computer network is a group of interconnected computing devices capable of sending or receiving data.

Examples

Packet switching. Files broken up into packet and sent in any order. the packets are reassembled by the recipient’s device.

The path is the path between two computer and the router will guild the path.

Bandwidth

The bandwidth is the max amount of data that can be sent in fixed amount of time. (Speed of data transmission)

Computer Protocol Models

Application

HTTP, DNS

Transport

TCP, UDP

Internet

IP

Network Access

The Scalability of the Internet