"How The Internet Works" Khan Academy

After watching "How the Internet Works" on Khan Academy, I have learned so many things. The first video explain the basics of the internet, or more precisely, the hardware, such as wires, cables, and WiFi. In the first video, Tess, an engineer from google explains that the Internet is a tangible physical system made to move information. She also explains that 8 bits make 1 byte, 1000 bytes make 1 kilobyte, and 1000 kilobytes make 1 megabyte. Bits are considered the atoms of information. In the second video, Paola, a Microsoft engineer, talks about how several devices can "talk" to each other. Internet protocols have allowed the internet to adapt and absorb new communication technologies such as new phones or new computers. This video also explains how all the devices on the internet have different addresses, like people and homes do. In the third video, Lynn, a spotify engineer explains the reliability of the internet and that data travels on the internet in a much less direct fashion as we may have thought. Lynn introduces us to TCP (Transmission Control Protocol). TCP manages the sending and receiving of all the data as packets, kind of like UPS or FedEx.The fourth video goes into depth about IP addresses as mentioned in the second video. Throughout the fifth video, Mia, a student a US Berkeley and a member of the Department of Defense, explains the significance of privacy on the internet. Because the internet is an open and public system, in order to help protect people's privacy, Mia explains how the internet uses several different "Keys" and codes to cover the information. The last video, explained by Jenny, who directs cyberspace investigations, tells the viewer about how hackers can hack into systems and how we can prevent that from happening. She also explains how viruses can infect and affect a persons computer. I learned a lot in these five videos. These videos have helped me be more aware as to what's really going on inside my computer.