Q: What types of user devices are most common with wireless WANs?

Answer: Laptops, PDAs, and mobile phones.

Q: Why do wireless WAN operators always charge for services?

Answer: Wireless WANs are expensive to install.

Q: Why must you be careful when selecting a wireless WAN radio NIC for your user device?

Answer: There are many different types of wireless WANs that are not compatible with each other.

Q: What is an advantage of a satellite system?

Answer: It can cover vast areas. A single satellite can cover roughly one-third of the Earth's surface.

Q: Which generation of cellular systems offers data rates up to 2 Mbps?

Answer: Third generation (3G).

Q: Which type of wireless WAN system is most common?

Answer: Cellular systems.

Q: Which of the two following cellular systems offers the highest data rates: GPRS or UMTS?

Answer: UMTS.

Q: What is the primary issue with meteor burst communications?

Answer: Low data rates.

Q: True or false: FDMA requires users to take turns transmitting signals.

Answer: False.

Q: How does CDMA keep users from interfering with each other?

Answer: Each user transmits using a different code.


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