[ITM 301] - Final Exam Guide - Everything you need to know! (24 pages long)

• School: Ryerson University
• Department: Information Technology Management
• Course: ITM 301
• Professor: Nurul Huda

Document Summary

The wireless spectrum: the wireless spectrum is a continuum of the electromagnetic waves used for data and voice communication, on the spectrum, waves are arranged according to their frequencies, from lowest to highest. Fcc, which controls its use) spans frequencies between 9 khz and. In previous chapters, you learned about signals that travel over a physical medium, such as a copper or fiber-optic cable. Wired and wireless signals share many similarities, including use of the same layer 3 and higher protocols, just as with wired signals, wireless signals originate from electrical current traveling along a conductor. The electrical signal travels from the transmitter to an antenna, which then emits the signal, as a series of electromagnetic waves, to the atmosphere. The signal propagates through the air until it reaches its destination. At the destination, another antenna accepts the signal, and a receiver converts it back to current.