ITM 100 Lecture Notes - Lecture 7: Network Operating System, Packet Switching, Network Interface

• School: Ryerson University
• Department: Information Technology Management
• Course: ITM 100
• Professor: Abbas Kermanti

Document Summary

Itm100 class 7 telecommunications, the internet, and wireless technologies. Major components in simple network: client and server computers, network interfaces (nics, connection medium, network operating system (nos, hubs, switches, routers. Software-defined networking (sdn: functions of switches and router managed by central program. Hundreds of local area networks (lans) linked to firm-wide corporate network. Various powerful servers: website, corporate intranet, extranet, backend systems. Signals: digital versus analog: modem: translates digital signals into analog form (and vice versa) Physical transmission media: twisted pair wire (cat5, 10-100+ mbps, coaxial cable, up to 1 gbps, fiber optics cable, 15 mbps to 6+ tbps, wireless transmission media and devices, up to 600+ mbps, satellites, cellular systems. Transmission speed: bits per second (bps), hertz, bandwidth. Convergence: telephone networks and computer networks converging into single digital network using internet standards. Broadband: more than 74 percent u. s. internet users have broadband access. Broadband wireless: voice, data communication is increasingly taking place over broadband wireless platforms.