ADMS 2511 Lecture Notes - Lecture 3: Internet2, Microsoft Teams, Extranet

• School: York University
• Department: Administrative Studies
• Course: ADMS 2511
• Professor: Carl Lapp

Document Summary

What is a computer network? (fig 6. 1, p. 156) system that connects comps and other devices (e. g. , printers) via communications media so that data and information can be transmitted among them. Bandwidth -transmission capacity of a network; stated in bits per second; broadband - transmission capacity of a communications medium faster than 4 mbps downstream and 1 mbps upstream. It is fluid, changes to reflect larger transmission capacities in the future. 7. 2 telecommunications and network technologies supporting the internet. I/o devices: communications processors modem, multiplexer, bridge, gateway, router, software browser, communications protocols, communications channels cables, telephone lines or wireless systems. What telecommunications transmission media should our organization use? (table 6. 1, p. 158: twisted-pair wire - strands of copper wire twisted in pairs; inexpensive, widely available, easy to work with. But slow (low bandwidth). ,subject to interference, easily tapped (low security): coaxial cable - insulated copper wire; higher bandwidth than above, less susceptible to electromagnetic interference.