ITM 100 Lecture Notes - Lecture 7: Wide Area Network, Network Operating System, Wireless Network

• School: Ryerson University
• Department: Information Technology Management
• Course: ITM 100
• Professor: O. Turetken

Document Summary

Communications refers to contact and signal between parties, therefore telecommunications means communicating from a distance. What is a computer network: two or more connected computers, major components in simple networks, client and server computers, network interfaces (nics, connection medium, network operating system, hubs, switches routers. Software defined network is a wide area network that covers a large geographical area. Types of networks: local area network, metropolitan network, wide area network, wide area network, wireless network. Key digital networking technologies: client/server computing, distributed computing model has largely replaced centralized mainframe computing, clients linked through network controlled by network server computer, server sets rules of communication. Each device on internet assigned internet protocol ip address. Internet services: e-mail, chatting and instant messaging, newsgroups, telnet, file transfer protocol, world wide web, voice over ip/voip. Image mentioned in lecture to illustrate internet services. Webservers are used for locating and managing web pages. Google, (27, november, 2011) the evolution of search https://www. youtube. com/watch?v=mtbshtwcnd4.