Wi-Fi — Questions and answers
Read the full story
What problem did Dr. Anya Sharma point out to Professor Ben Carter?
Choices
- A. The computers were too old.
- B. There was a big tangle of wires and cables. ✓
- C. The printers were broken.
- D. The internet was too fast.
Answer: B. There was a big tangle of wires and cables.
From page 1
What kind of signal did Dr. Sharma imagine for sending secret messages?
Choices
- A. A signal that only uses one radio frequency.
- B. A signal that hops rapidly between many frequencies. ✓
- C. A signal that can be heard by everyone.
- D. A signal that makes loud noises.
Answer: B. A signal that hops rapidly between many frequencies.
From page 3
When did companies like NCR and AT&T start making early wireless LAN products?
Choices
- A. In the 1940s.
- B. In the early 90s. ✓
- C. In the 2000s.
- D. Last year.
Answer: B. In the early 90s.
From page 6
What idea from Lamarr and Antheil evolved into methods like OFDM for Wi-Fi?
Choices
- A. The idea of using only one cable.
- B. The 'frequency hopping' idea. ✓
- C. The idea of drawing diagrams.
- D. The idea of watching movies.
Answer: B. The 'frequency hopping' idea.
From page 8
According to Dr. Sharma, where can you find Wi-Fi being used in modern life?
Choices
- A. Only in labs for scientists.
- B. Only on laptops.
- C. In airports, coffee shops, homes, and hospitals. ✓
- D. Only for smart devices.
Answer: C. In airports, coffee shops, homes, and hospitals.
From page 9
What did Professor Carter say the journey from tangled cables to seamless wireless has done for our world?
Choices
- A. It made computers more complicated.
- B. It revolutionized our world by empowering collaboration and innovation. ✓
- C. It stopped people from talking to each other.
- D. It created more tangled cables than before.
Answer: B. It revolutionized our world by empowering collaboration and innovation.
From page 10