Bluetooth Trivia Questions

Both Bluetooth and Wi-Fi (2.4 GHz) share the same radio band, leading to potential interference. Adaptive frequency hopping helps Bluetooth avoid conflicts.

Engineers at Ericsson in Sweden developed Bluetooth to replace serial cables for short-range communication. The first consumer device shipped in 1999.

Many modern Bluetooth devices use secure simple pairing (SSP) with numeric comparison or just works mode, eliminating fixed PINs for convenience.

King Harald Bluetooth of Denmark united Scandinavia; similarly, Bluetooth technology unites devices. The logo even combines his initials in runes.

Bluetooth is generally more power-efficient than Wi-Fi for short-range audio, though newer codecs can narrow the gap. It was designed for low energy.

Bluetooth Class 1 radios can reach up to 100 meters in open air, but walls reduce range. Still, it often passes through one or two walls.

BLE and classic Bluetooth use different radios and protocols, so they cannot directly communicate. However, dual-mode chips exist to support both.

Bluetooth piconets support up to 7 active slave devices plus one master, but this hasn't changed with 5.0—it's a classic Bluetooth limit.