On 05/18/2018 04:34 PM, Carlos E. R. wrote:
Could you remind us what is G and N? :-)
I know you're kidding, but they are different generations of WiFi. On 2.4 GHz, 802.11b was the first commonly used for networking. It ran at a max of 11 Mb/s. G was the next generation at 54 Mb and is the exact same protocol as 802.11a, on 5 GHz, with the addition of protection for b. N runs at up to 600 Mb, IIRC. It can also be on both 2.4 & 5 GHz bands. Of course, we can't forget about 802.11ac, which is even more bandwidth, but only on 5 GHz. All of these, other than 802.11b, use orthogonal frequency division multiplexing. 802.11b uses Direct Sequence Spread Spectrum. This difference means that the 802.11b protection used in g & n causes a significant performance hit, as g & n must send a b frame to reserve time for the g or n frame. 802.11b also uses WEP encryption, which is easily broken. 802.11n & ac require WPA2 encryption. These days there is little reason to use anything other than 802.11n on 2.4 GHz, as it been available for years. BTW, O'Reilly books have some good books on WiFi, written by Matthew Gast. -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org