CSP Notes PDF

Networks: two or more computers that are linked in order to share resources (such as printers and CDs), exchange files, or allow electronic communications. IP address: Address to each website on the Internet. Bandwidth requirements: Bitrate. Higher bitrate means higher bandwidth. Latency:The time it...

Networks: two or more computers that are linked in order to share resources (such as printers and CDs), exchange files, or allow electronic communications. IP address: Address to each website on the Internet. Bandwidth requirements: Bitrate. Higher bitrate means higher bandwidth. Latency:The time it takes for a bit to travel from sender to receiver Bitrate:The amount of data (in bits) that can be sent in a fixed amount of time Protocols: Set of rules set to each device on the internet. World wide web differences to internet: The internet is a global network of interconnected computer networks, while the World Wide Web (also known as the Web) is a collection of documents and other resources, linked by hyperlinks and URLs, that are accessed via the internet. Routers: The process of sending data between 2 computers on the Internet. The data is sent through routers that determine the route. Internment in terms of network Cookies: a piece of data from a website that is stored within a web browser that the website can retrieve at a later time. Hardware: tools, machinery, and other durable equipment. DNS: A name given to the IP Address Packets: Data is broken down into packets. Packets are labeled with metaBase (information). The layout of the packet is defined by a Protocol (IP). Packets must include: 1. A destination IP address 2. A from IP address 3. The actual data being sent TCP(Transmission Control Protocol): allows multiple packets from 2 computers to be sent. Determines what order the packets must be sent with the number in the metaBase. HTTP: A protocol that standardizes the language for talking to web servers to send and receive web resources. (Hypertext transfer protocol) URL (Uniform Resource Locator) Ex: www.example.com/homepage.html Domain: Where in the internet you need to look for this resource Path: What resources you are requesting STEPS: 1. The URL 2. Create an HTtP request 3. Use DNS to get the IP address 4. TCP/IP breaks the request into packets  5. Packets are routed to the Proper IP Address 6. The original request is pieced together from the packets 7. The server creates the HTTP response. 8. TCP breaks up the response into packets 9. The response packets are routed back to the computer 10. The original Response is pieced together from the packets 11. The page is rendered! THIS ALL HAPPENS LESS THAN A SECOND! Steps of viewing webpage: 1. URl 2. Request 3. Response 4. Rendering of the Page firewall controls incoming and outgoing traffic network