Âm thanh chia sẻ

standards of wireless communications. Wireless standards for LANs use the 2.4 GHz and 5 GHz frequency bands. Collectively these technologies are referred to as Wi-Fi. Another organization, known as the Wi-Fi Alliance, is responsible for testing wireless LAN devices from different manufacturers. The Wi-Fi logo on a device means that this equipment meets standards and should operate with other devices that use the same standard. Wireless standards are constantly improving the connectivity and sp