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RF Cafe Quiz #21

RF Engineering Quizzes - RF CafeAll RF Cafe Quizzes make great fodder for employment interviews for technicians or engineers - particularly those who are fresh out of school or are relatively new to the work world. Come to think of it, they would make equally excellent study material for the same persons who are going to be interviewed for a job. Bonne chance, Viel Glück, がんばろう, buena suerte, удачи, in bocca al lupo, 행운을 빕니다, ádh mór, בהצלחה, lykke til, 祝你好運. Well, you know what I mean: Good luck!

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Note: Some material based on books have quoted passages.

This quiz test your knowledge of the modern wireless bands.

1. What are the frequency bands for IEEE 802.11a and IEEE 802.11b/g, respectively?

a) 900 MHz and 2.4 GHz

b) 2.4 GHz and 900 MHz

c) 2.4 GHz and 5.2 GHz

d) 5.2 GHz and 2.4 GHz

2. Which wireless router type is most likely to use three antennas?

a) 802.11a

b) 802.11b

c) 802.11g

d) 802.11n

3. On which frequency band does the EGSM mobile phone system operate?

a) 450 MHz

b) 900 MHz

c) 1800 MHz

d) 1900 MHz

4. On which frequency band does the DCS/PCS mobile phone system operate?

a) 1800/1900 MHz

b) 1900/2100 MHz

c) 2100/2300 MHz

d) 2300/2400 MHz

5. On which frequency band does Bluetooth operate?

a) 450 MHz

b) 900 MHz

c) 2.4 GHz

d) 5.2 GHz

6. Which IEEE standard describes the Bluetooth system?

a) 802.11

b) 802.15

c) 802. 20

d) 802.BT

7. Which type of modulation scheme does Bluetooth and WiFi employ?

a) AM (amplitude modulation)

b) FM ( frequency modulation)

c) PM (phase modulation)

d) SS (spread spectrum)

8. Which of the following IEEE 802.x wireless systems currently offers the lowest data rate?

a) WiFi (802.11)

b) Bluetooth (802.15)

c) ZigBee (802.15.4)

d) WiMax (802.16)

9. What does NFC stand for?

a) Nationalé Federaçion de Communicatique

b) Nano Field Communications

c) Near Field Communications

d) New Fangled Communications

10. Which of the following systems has been show to cause brain cancer, sterility, skin cancer, and in some cases sever burns  to the body?

a) Cellphones

b) WiFi devices

c) Bluetooth devices

d) All of the above

Need some help? Click here for the answers and explanations.

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