How is Information Transferred? Developing an Intuition for Network Communication Protocols. a 6.UAT concept talk by Olga Stroilova. Information transfer networks are everywhere. Internet connection: Ethernet Laptop WiFi: Wireless LAN Cell phones: Mobile network
a 6.UAT concept talk by
Internet connection: Ethernet
Laptop WiFi:Wireless LAN
Cell phones: Mobile network
How do these systems work?
Sounds, letters, signs, pictures, movies
0’s and 1’s, voltage high and lows, radio waves
Methods of Information Transfer
Speech, Morse code, wire and radio communication
Rules of transfer are called Communication Protocols
Idea Cut down costs by connecting all computers with a single wire
“Play Nice”: Randomized Backoff + Collision Detection
Idea Use radio waves as transfer medium for increased portability
“Play First, Check Later”: Randomized Backoff + Collision Avoidance
Idea Ensure quality of data stream by reducing probability of collision
“Play By Yourself”: No Collisions, No Backoff
Protocols are designed based on the
product goals, limitations, and tradeoffs.
To understand how they work, Think like an Engineer!