1. __________ switching is most commonly used in systems that require 'real-time' communications, such as voice and live media transmissions.
Correct Answer is : Circuit
2. Which one of the following does not use circuit switching for transmissions?
Correct Answer is : E-mail
3. This spread-spectrum signal structuring technique uses amplitude modulation to combine the waveforms of the data and carrier signals.
Correct Answer is : Direct-sequence
4. A __________ infrared transmission must have a clear, unobstructed transmission path between the transmitter and receiver.
Correct Answer is : Directed
5. The radio communication spectrum is divided into bands based on ______.
Correct Answer is : Frequency
6. Microwaves use ________ propagation
Correct Answer is : Line-of-sight
7. Multiplying the frequency of an electromagnetic wave travelling through air by its wavelength will always yield _________.
Correct Answer is : The speed of light
8. The type of propagation used in radio communication is highly dependent on the ________ of the signal.
Correct Answer is : Frequency
9. High-frequency radio waves use ________ propagation
10. Radio communication frequencies range from ___________.
Correct Answer is : 3 KHz to 300 GHz
11. Which of the following wireless transmission phenomenon cause ISI?
Correct Answer is : Multipath propagation
12. What is the modulation method used with 802.11a PHY?
13. On which 802.11x topology are frames forwarded between access points within the same network?
14. Which of the following IEEE 802.11 standards does not define a PHY layer?
Correct Answer is : 802.11i
15. Which of the following IEEE 802.11 standards supports data rates of 100 Mbps?
Correct Answer is : 802.11n
16. What term is used to represent the physical layer of an 802.11x standard?
17. What is the current designation for the original IEEE 802.11 standard?
Correct Answer is : 802.11 Legacy
18. What is the term used to represent the IEEE 802.11 layer that controls access to the medium?
19. What is the 802.11b topology that arranges wireless stations in a peer-to-peer network?
Correct Answer is : Ad-hoc
20. What networking structure do the 802.11 standards define?