BTM 200 Lecture 18: lecture 18
2 Jun 2020
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Document Summary
Short-range wireless: two-way communication (continued: personal area wireless, bluetooth. Short-range wireless standard to link cellphones, computers, and peripherals at distances usually up to 33 ft. Transmits up to 24 mbps per second. When bluetooth devices come into range of each other, they negotiate. If they have information to exchange, they form a temporary wireless network: ultra-wideband (uwb) Operates in 480 megabits - 1. 6 gigabits per second, range up to 30 ft. Uses a low power source to send out millions of bursts of radio waves each second: wireless usb. Usb is the most used interface on pcs. Unit 6b: cyberthreats: trolls, spies, & hackers & thieves. The ongoing dilemma of the digital age is balancing convenience against security: security consists of safeguards for protecting information technology against unauthorized access, system failures, and disasters that can result in damage or loss.
