piątek, 15 marca 2019

Porównanie teoretycznych prędkości przy różnych standardach Wi-Fi

Standard 802.11 - b,a,g,n,ac (SS - ilość strumieni , MHz - szerokość kanału)

 
Standard 20 MHz 40 MHz 80 MHz 160 MHz
802.11b 11 Mbps
802.11a/g 54 Mbps
802.11n   (1 SS) 72 Mbps 150 Mbps
802.11ac (1 SS) 87 Mbps 200 Mbps 433 Mbps 867 Mbps
802.11n   (2 SS) 144 Mbps 300 Mbps
802.11ac (2 SS) 173 Mbps 400 Mbps 867 Mbps 1.7 Gbps
802.11n  (3 SS) 216 Mbps 450 Mbps
802.11ac (3 SS) 289 Mbps 600 Mbps 1.3 Gbps   2.3Gbps
802.11n  (4SS) 289 Mbps 600 Mbps
802.11ac (4 SS) 347 Mbps 800 Mbps 1.7 Gbps 3.5 Gbps
802.11ac (8 SS) 693 Mbps 1.6 Gbps 3.4 Gbps 6.9 Gbps

sobota, 9 marca 2019

English First Aid - nauka angielskiego

EFA (English First Aid) teaches you how to learn English very efficiently using methods based on the self-study habits of polyglots (people who can speak many languages fluently).
Link do strony