Appendix A. Answers to the “Do I Know This Already?” Quizzes

Chapter 1

1. C. The IEEE 802.11 standard focuses on wireless LAN definitions, methods, and operation. It is made up of many pieces, as described in Chapter 2, “RF Standards.” Sometimes you might see IEEE 802.11x, which refers to the many subparts of 802.11. Be aware of the subtle difference between that and 802.1x, which defines port-based network access control.

2. B, E. Wireless LANs use the 2.4-GHz and 5-GHz bands. Be careful to notice the difference between megahertz (MHz) and gigahertz (GHz). Also remember that 5.5 Mbps and 11 Mbps are some of the common data rates used in wireless LANs, but those are not involved when you need to identify the frequency band.

3. A. When the two ...

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