Q: Why does a wireless MAN offer good return on investment?

Answer: Wireless MANs eliminate the need to install expensive cabling or lease communications circuits.

Q: A learning bridge forwards all packets. True or false?

Answer: False.

Q: What is the primary difference between a bridge and an access point?

Answer: A bridge connects networks together. An access point connects end users.

Q: What are examples of semidirectional antennae?

Answer: Patch and Yagi.

Q: In regards to beamwidth, what is the primary difference between a semidirectional and highly directional antenna?

Answer: A highly directional antenna has a much narrower beamwidth, which increases range if the power remains constant.

Q: What is an example of a highly directional antenna?

Answer: Dish antenna.

Q: What polarization would be most effective at a receiver if the transmitter were using vertical polarization?

Answer: Vertical polarization.

Q: What are the advantages of using point-to-multipoint systems versus point-to-point for interconnecting multiple sites?

Answer: Point-to-multipoint can be less expensive and easier to add more sites.

Q: What are the advantages of using packet radio for wireless MANs?

Answer: Packet radio routers don't require any cabling between them, and the system is relatively survivable because packets can take a different route if a router becomes inoperative.

Q: Which standards do wireless MANs employ?

Answer: 802.11, Wi-Fi, and 802.16.


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