Q 01/05

Wi-Fi is a family of wireless protocols based on which family of IEEE standards?

A) 802.3

B) 802.11

C) 802.15

D) 1394

Answer · why

B) 802.11

802.3 is Ethernet, 802.15 covers personal area networks and 1394 is FireWire.

Q 02/05

The two radio bands Wi-Fi most commonly uses are 5 GHz and which other?

A) 900 MHz

B) 2.4 GHz

C) 3.6 GHz

D) 60 GHz

Answer · why

B) 2.4 GHz

Newer generations add a third, higher band; each band is split into multiple channels.

Q 03/05

Which common kitchen appliance shares Wi-Fi's most crowded radio band and can interfere with it?

A) Induction hob

B) Refrigerator

C) Microwave oven

D) Dishwasher

Answer · why

C) Microwave oven

A 1985 FCC ruling opened parts of the ISM bands for unlicensed use, which is why Wi-Fi shares spectrum with microwaves and cordless phones.

Q 04/05

Which brand-consulting firm coined the name Wi-Fi in 1999?

A) Landor

B) Pentagram

C) Wolff Olins

D) Interbrand

Answer · why

D) Interbrand

The Wi-Fi Alliance wanted something catchier than "IEEE 802.11b Direct Sequence"; the name was picked from a list of ten.

Q 05/05

The name Wi-Fi was partly chosen because it echoes which older consumer term?

A) Wireless Telegraphy

B) Walkie-talkie

C) Sci-Fi

D) Hi-Fi

Answer · why

D) Hi-Fi

Whether it is really short for "Wireless Fidelity" is disputed, though the Alliance briefly used that slogan.