Latest Basics News
Connection-Oriented Transport: TCP
Now that we have covered the underlying principles of reliable data transfer,…
Connectionless Transport: UDP
The Internet makes two transport protocols available to its applications, UDP and TCP. In this…
Multiplexing and Demultiplexing Applications
In this section we discuss the multiplexing/demultiplexing of messages by the transport…
DNS – The Internet’s Directory Service
We human beings can be identified in many ways. For example, we…
Web Caches
A Web cache – also called a proxy server – is a network entity that satisfies HTTP requests…
The Conditional GET
By storing previously retrieved objects, Web caching can reduce object-retrieval delays and…
User-Server Interaction: Authentication and Cookies
We mentioned above that an HTTP server is stateless. This simplifies server design, and…
