1.Chapter 5 covers multiple modulation schemes that can be used with spread spectrum transmission. Do you see a scenario in which FHSS will be preferred?
2.Table 1-2 in page 7 shows U-NII bands and power limits for each band. Guess the purpose of specifying such power limits for unlicensed bands. Explain.
3.Imagine that your neighbors are your very close family members and that everyone in both homes goes back and forth all the time. Is it possible to configure both WLANs like Extended service set to enable smooth transitions? Why or why not?
4. Explain why Carrier Sense Multiple Access/Collision Detection cannot be used on a WLAN. Explain what needs to be used and why.
5.What is the difference between old-style frequency division multiplexing and OFDM?
6.Highlight the difference between open system authentication and shared key authentication.
7.The top of page 141 shows that there can be only 3 colocated wireless LANs with 802.11b. Does that mean 3 channels? Does that mean we cannot manually configure other channels in a router that uses 802.11b? Explain.
8.Page 129 talks about 16-QAM and 64-QAM modulations which enable very high speeds in WLAN. Can you explain this with a real-world analogy?
9.What does your laptop do in “sleep mode” to maintain WLAN connectivity?
10. Compare the performance of polling with CSMA/CD & CSMA/CA mechanisms in lightly loaded and highly loaded conditions. What do you notice about each? Overall, which mechanism is more efficient? Explain why.
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