Computer Science 1033A/B Lecture Notes - Packet Switching, Nonprofit Organization, Top-Level Domain

• School: Western University
• Department: Computer Science
• Course: Computer Science 1033A/B
• Professor: Vivi Tryphonopolous

Document Summary

One can connect to the internet through: Internet ready cable: digital subscriber line (dsl) How does the internet work: circuit switching: transfer the complete data without splitting it. How a phone line works: packet switching: On the internet, data is sent through transferring packets through different ip addresses: tcp (transmission control protocol) Take a large chunk of data and break it into small packets. Ip is responsible for sending the packets out on to the internet. Detect lost packets, error packets because of network congestion, traffic load balancing, etc. Request packets to be resent from the source. Rearrange and reassemble the packets back into the original document. Picks a route for a packet, stopping at router devices which pick the next best machine to send it. Need to be able to identify all the machines on the internet, and thus each machine has a unique ip. 4 numbers that range from 0 to 255.