# Mandatory Reading on How the Internet Works {% hint style="warning" %} Please go through these materials before TechUp. These materials will be covered in the quiz on 14 May (30 MCQ, 70% score to pass TechUp). {% endhint %} |

Code.org YouTube playlist: How Computers Work

  1. Introducing how computers work
  2. What makes a computer, a computer?
  3. Binary & data
  4. Circuits & logic
  5. CPU, memory, input & output
  6. Hardware and software
| 25 min | | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ------ | |

Code.org YouTube playlist: How the Internet Works

  1. What is the Internet?
  2. Wires, Cables & Wifi
  3. IP Addresses & DNS
  4. Packets, Routing & Reliability
  5. HTTP & HTML
  6. Encryption & Public Keys
| 45 min | | [What happens when you type a URL in the browser and press enter?](https://medium.com/@maneesa/what-happens-when-you-type-an-url-in-the-browser-and-press-enter-bb0aa2449c1a) (Login to Medium required) | 7 min | --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://info.techup.live/programme-essentials/mandatory-reading-on-how-the-internet-works.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.