AP CSP - 4.1 The Internet

The Internet

a computer network consisting of interconnected network sthat use standardized, open(nonproprietary) communication protocols.

Computer Networks

systems of computing devices

computing device

physical machien that can run a program ex. tablets, computers, servers, routers, smart thermometer

computing systems

consist of multiple computing devices working together to perform tasks and process data.

computer network

a group of computing devices that can share data with each other. Can be complicated connection, linking all computing devices in workspace/city

the Internet(digital world)

The internet takes all computer networks and connects them to each other, creating the network we know today; it is the very largest computer network, allowing connection to anyone.

data streams\

how information travels through the internet, it is broken up in packets to send things like photos, websites, videos

packets

Contain a section of the data you want to send out, contains metadata. Packets are created by computing devices and sent through paths.

metadata

data about data, tells routers where packet is from, where it’s going, and the order for the reassembly.

Paths

sequences of connected computing devices, primaryily known as routers, begin and sender, end at receiver. Packets can arrive at the destination out of order, in order, or not at all, but will be reassembled.

Routing

the process of finding the path a packet will take to get from one device to another; not planned, routers make decicisions as packets are sent to them.

bandwidth

rate of data transfer it allows from one device to another; maximum amount of data a network connection can move in a certain time.

Internet Protocols

set of rules that govern data transmission over the Internet, ensuring communication between devices.

protocol

standard set of rules everyone agrees on, open protocols are used on the internet, everyone has access to them.

TCP/IP

older protocol, Transmission Control Protocol, Internet Protocol, TCP determines how packets are created and reassmbled, IP moves packets, and dictates how devices are given addresses to communicate with each other

UDP

User datagram protocol, offers way to deilver data faster because it does not do error checking, used for connections that need to happen fast. eg. gaming

World Wide Web

system of web pages, programs, and files. NOT the same as the internet, runs on the internet. governed by HTTP protocol, controls data transmission

HTTP

Hyper text transfer protocol, used for transmitting data over the world wide web.

Scalability

internet is designed to be scalable,