Video 1

A computing device: a physical artifact that can run a program.
- examples: computers, tablets, severs, routers, and smart sensors
computing system: group of computing devices and programs working together for a common purpose
computer network: group of interconnected computing devices that are capable of sending+recving data.
- a type of computing system
path b/w two computing devices on a network
- sender
- reciver
routing: the process of finding a path from sender to reciver
bandwidth of a computer network: max amount of data that can be sent in a fixed amount of time
- meaured in bits per second
packet: is a small amount of data sent over a network, includes the source and destination

Video 2

the internet: a computer network with interconnected networks that sue open comminications protocols
access to internet depends on ability to connect computing device to an internet connected device
a protocol is an agreed-upon set of rules that specify the behavior of a system
routing on the internet is usually dynamic, not specificed in advance
the scalabitlity of a system is the capacity for the system to change in size and scale to meet new demands
the internet was designed to be scalable
information is passed through the internet as a data stream, data streams contain chunks of data, which are encapsulated in packets
packets contain a chunck of data and metadata used for routing the packet between the orgin and the destination on the internet, as well as for data reassembly
packets may arrive at the destination in order, out of order, or not at all
IP, TCP, and UDP are common protocols used on the internet
the world wide web is a system of linked pages, programs, and riles
HTTP is a protocol used by the world wide web.
the world wide web uses the internet

AP COMPUTER SCIENCE PRINCIPLES