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
Datalink, fiber, MAC, ethernet, NIC, wire
The Scalability of the Internet