ADMS 2511 Lecture Notes - Lecture 4: Crowdsourcing, Extranet, Unified Communications

• School: York University
• Department: Administrative Studies
• Course: ADMS 2511
• Professor: Ingrid Splettstoesser

Document Summary

A computer network is a system that connects computers and other devices (e. g. printers) via communications media so that data and information can be transmitted among them. Voice and data communication networks are becoming faster (bandwidth increasing) and cheaper. Bandwidth is the transmission capacity of a network; stated in bits per second. Broadband refers to network transmission capacities ranging from approximately 1 million bits per second (megabits/s) to as much as 175 megabits/s with fibre-to-the-home. Various types of computer networks (smallest to largest): personal area networks (pans) typically a few metres; can be wired or wireless. Local area networks (lans: metropolitan area networks (mans, wide area networks (wans) Enterprise networks: multiple lans form a wan, and multiple wans form an enterprise network, backbone network high-speed central networks to which multiple smaller networks (i. e. lans and smaller wans) connect, embedded lans connect to the backbone wan.