What are the ISM bands? @internet-class

Uploaded November 2016 | Updated September 2026, 2 hours ago

Because they can interfere with each other, wireless communications in the US are heavily regulated. Only small frequency bands are set aside for general use, referred to as the industrial, scientific, and medical (ISM) bands. If you have noticed that Wifi devices operate in the 2.4GHz band, or the 5GHz band, this is why. And as a result of the regulation, a huge amount of highly-important communications occur only over small slivers of wireless spectrum.

Credits: Talking: Geoffrey Challen (Assistant Professor, Computer Science and Engineering, University at Buffalo). Producing: Greg Bunyea (Undergraduate, Computer Science and Engineering, University at Buffalo).

Part of the internet-class.org online internet course. A blue Systems Research Group (https://blue.cse.buffalo.edu) production.

What is a crytographically secure hash function?

How is illegal or copyrighted content discovered online?

$What is a data center? Searching something as enormous as the world wide web can only be accomplished by a huge number of computers. The large fraction of computers operated by large internet companies—like Facebook, Google, Microsoft, or Twitter—are located in data centers. Data centers are specifically designed to hold large numbers of computers. That design goal produces a specific set of challenges, particularly related to power and heating. Credits: Talking: Geoffrey Challen (Assistant Professor, Computer Science and Engineering, University at Buffalo). Producing: Greg Bunyea (Undergraduate, Computer Science and Engineering, University at Buffalo). Part of the https://www.internet-class.org online internet course. A blue Systems Research Group (https://blue.cse.buffalo.edu) production.$

What are computers and the internet doing for us?

What are some weaknesses in the Tor protocol?