Ubuntu provides additional drivers for wireless adapters. Wired connection via Ethernet or USB tethering can be used. Smartphones can be used for internet sharing via Bluetooth
802.11n replaced older standards in 2007. Standard uses multiple antennas for increased data rates. Performance depends on network setup and interference
Use quality brand name adapters for better performance and reliability. Install latest adapter drivers from vendor. Use Gigabit devices for high-speed data transfer. Switches are better than hubs for network performance. Use CAT-6 cables to avoid interference
Wireless devices can be identified using ip, lsusb, or hwinfo commands. Multiple wireless interfaces can be configured through Settings program
Better router has 14 non-overlapping 5GHz channels (36-161). Less expensive router has 24 non-overlapping 5GHz channels. Channels 52-144 require dynamic frequency selection (DFS)
Connect internet cable to modem's WAN port. Connect router to modem via ethernet cable. Access router interface using IP address (192.168.1.1, 192.168.0.1, 10.0.0.1). Enable wireless networking and select WPA encryption