Q 01/05

Bluetooth is named after a 10th-century king of which country?

A) Norway

B) Sweden

C) Iceland

D) Denmark

Answer · why

D) Denmark

Harald Bluetooth united the Danish tribes into one kingdom, and the name was meant to suggest uniting communication protocols.

Q 02/05

The Bluetooth logo is a bind rune combining which two Younger Futhark runes?

A) Hagall and Bjarkan

B) Fehu and Uruz

C) Ansuz and Raido

D) Tiwaz and Berkanan

Answer · why

A) Hagall and Bjarkan

It merges the Younger Futhark runes Hagall and Bjarkan, standing for H and B.

Q 03/05

Bluetooth radios operate in which frequency band?

A) 900 MHz

B) 2.4 GHz

C) 5 GHz

D) 60 GHz

Answer · why

B) 2.4 GHz

It shares the globally unlicensed ISM band with microwave ovens and much Wi-Fi traffic.

Q 04/05

In its most widely used mode, Bluetooth's range is roughly how far?

A) Up to 100 metres

B) Up to 1 kilometre

C) Up to 1 metre

D) Up to 10 metres

Answer · why

D) Up to 10 metres

Transmission power in that mode is limited to just 2.5 milliwatts.

Q 05/05

Which Swedish company began developing the short-link radio technology that became Bluetooth in 1989?

A) Ericsson

B) Electrolux

C) Saab

D) Nokia

Answer · why

A) Ericsson

Nils Rydbeck, CTO at Ericsson Mobile in Lund, initiated it to develop wireless headsets.