Computer Networks (Personal)
Port numbers : HTTPS : 443 DNS : 53 Cables under the ocean for internet if one fails, all future will also fails to reach at particular, you have to pass through many if central system fails, everything will be failed scalability issues MIMP for interviews - OSI model 2 types of architecture: 1. client-server 2. peer-to-peer lets say we have opened 5 tabs in google chrome, we are sending some req to the server, now, how will we kknow where to show response, in which tab? so, our client system automatically creates random ports and they get destroyed after the request is fullfilled or process is no longer needed. DNS - works like a db for domain name and ip addresses Think of it this way: the network layer delivers the letter to the right house (host IP address), and the transport layer ensures it gets to the correct person (application port) inside that house. we need to ensure that all t...