ITM 102 Lecture Notes - Lecture 7: Wi-Fi, Optical Fiber, Icann
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21 Jul 2016
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Chapter 7: Telecommunications, the Internet, and wireless Technology
Networking and Communications Trends
Convergence
Telephone networks and computer networks converging into single digital network using internet standards
Broadband
More than 90% of Canadian internet users have broadband access
High speed transmission technology. Designates a single communications medium that can transmit multiple
channels of data simultaneously
Broadband wireless
Voice, data communication are taking place over broadband wireless platforms
What’s a computer Network?
Two or more connected computers
Major components in simple network (client and server computers, network interfaces (NICs), connection medium,
network operating system, hubs, switches, routers)
SDN (software-defined networking): functions of switches and routers managed by central program
Corporate Network Infrastructure
100 of local area networks (LANs) linked to firm-wide corporate network
Various powerful servers (website, backend systems, external, intranet)
Mobile wireless LANs (Wi-fi networks)
Tekephone networks
Wireless cell phones
Key Digital Network Technologies
Client/server computing
a model for computing that splits processing between clients and servers on a network, assigning functions to the
machine most able to perform the function
Distributed computing model
Clients linked through network controlled by network server computer
Server sets rules of communications for network
Replaced centralized mainframe computing
The internet: Largest implementation of client/server computing
Packet Switching
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