4.1 The Internet

Daily Video 1

We have created smaller computers
Even though it is easier to do now, it is still hard to do it alone
Computers can receive and send data
Packet: Small amount of data sent over a network
Every packet has a source and destination for the information
Computer system: A group of computing devices and programs working together for a joint purpose
Computer network: A group of interconnected computing devices capable of sending or receiving data (type of computing system)
Packet switching: A file that is broke up into packets, sent in any order, and reassembled by the recipient’s device
Path: Sequence of directly connected computing devices from the sender to the receiver
Routing: Finding a path
Bandwidth: Max amount of data sent into a fixed amount of time on a computer network

Internet is a computing network that has interconnected networks the use standardized, open communication protocols
To access the internet, you need to connect to a computing device to an Internet connected device
Protocol: Set of rules that were agreed on about the behavior of a system (they are open)
Internet was designed to be scalable
Information is passed through data streams
Data streams have data that is in packets
Packets can be received in order, out of order, or not at all
IP, UDP, and TCP are all common protocols
World Wide Web is a system of links, programs, and files
HTTP is used by the world wide web and is a protocol
World wide web uses the internet