Q 01/05

What do the curved bars of the Wi-Fi icon on a phone or laptop measure?

A) Signal strength

B) Download speed

C) Network security

D) Number of users

Answer · why

A) Signal strength

Signal strength: the bars show how well your device hears the router, not how fast the link is, so a full set can still come with a crawling connectio...

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) 10 GHz

D) 60 GHz

Answer · why

B) 2.4 GHz

2.4 GHz: US regulators opened the band to licence-free radio gear in 1985, so any maker could build for it without buying airwaves, and gadgets of eve...

Q 03/05

Which common kitchen appliance can disrupt nearby Wi-Fi while it is running?

A) Induction hob

B) Refrigerator

C) Microwave oven

D) Dishwasher

Answer · why

C) Microwave oven

Microwave oven: it heats food with the same band of waves most Wi-Fi uses, and the oven was there first, since that band was set aside in 1947 for mic...

Q 04/05

Which chip maker's Centrino brand, launched in 2003, put built-in Wi-Fi into millions of laptops?

A) Intel

B) AMD

C) Nvidia

D) Qualcomm

Answer · why

A) Intel

Intel: Wi-Fi was far from a standard laptop feature at the time, so Centrino bundled it with the processor and a vast advertising blitz had buyers ask...

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

Hi-Fi: the rhyme was the point, and by one founder's account the name stands for nothing, with the 'Wireless Fidelity' slogan added afterwards to reas...