Chapter 4 Wireless Technology
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3. A simple radio broadcast consists of a(n) _____, which generates a carrier
wave and a(n) _____, which receives a carrier wave.
4. What is a channel?
5. What are the two major classifi cations of antennae?
6. Which of the following antenna types is not used in point-to-point links?
A. Flat panel
B. Omni
C. Parabolic
D. Yagi
7. Which antenna style was developed with aesthetics in mind?
8. What is spread spectrum?
9. The spread spectrum technique that transmits data on multiple channels
simultaneously is called _____.
10. The spread spectrum technique that transmits data on multiple channels
sequentially is called _____.
11. Why is frequency hopping used?
12. The _____ transmission technique uses the 5-GHz frequency and can achieve
data rates as high as 54 Mbps.
13. List the frequency range and related power rating of each of the three U-NII
classifi cations.
14. What is an SSID?
15. What frequency does the IEEE 802.11a standard specify, and what is the
maximum achievable distance?
16. What frequency does IEEE 802.11b standard specify, and what is the
maximum achievable distance?
17. What frequencies does IEEE 802.11g standard specify, and what are the
related maximum achievable distances?
18. What is the maximum throughput based on the IEEE 802.11n standard?
19. Which media access method does the 802.11 wireless standard specify?
20. What is the difference between CSMA/CA and CSMA/CD?
21. What does the acronym MIMO represent?
22. What is MIMO wireless technology?
23. What is the maximum achievable distance of a Bluetooth device?
24. What is the data rate of the Bluetooth 2.0 standard?
25. What is the data rate of the Bluetooth 3.0 standard?
26. Which IEEE specifi cation addresses WPAN?
27. _____ technology is based on radio waves connecting to designated areas
referred to as cells.
28. What is a disadvantage of satellite communications?
29. What is a geosynchronous orbit?
30. What is generally the maximum amount of satellite transmission delay
acceptable for telephone conversations?
31. What is an advantage of wireless networking?
32. What is the one major disadvantage of wireless technology?
33. What does the acronym WEP represent?
34. Write an example of an encryption key.
35. What does the acronym CCKM represent?