Review Questions

1:For reliable network operation, signal strength is more important than SNR. True or false?
2:A reliable wireless link needs a line-of-sight path and an unobstructed Fresnel zone. True or false?
3:Will the noise level always be low in a rural area?
4:How many nonoverlapping 2.4 GHz channels are available for use in the United States?
5:The consequence of a low SNR is reduced network throughput. True or false?
6:Reusing a DSSS frequency at the same AP location requires how many decibels of antenna isolation?
7:To avoid interference, collocated FHSS sectors should use different hopping sequences and different hopping sets. True or false?
8:When is the SNR highest at an AP?
9:When the percentage of retransmitted packets reaches 20 percent, ...

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