Chapter 7

1:

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

A1:

Answer: Laptops, PDAs, and mobile phones.

2:

Why do wireless WAN operators always charge for services?

A2:

Answer: Wireless WANs are expensive to install.

3:

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

A3:

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

4:

What is an advantage of a satellite system?

A4:

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

5:

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

A5:

Answer: Third generation (3G).

6:

Which type of wireless WAN system is most common?

A6:

Answer: Cellular systems.

7:

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

A7:

Answer: UMTS.

8:

What is the primary issue with meteor burst communications?

A8:

Answer: Low data rates.

9:

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

A9:

Answer: False.

10:

How does CDMA keep users from interfering with each other?

A10:

Answer: Each user transmits using a different code.



     
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