TAILIEUCHUNG - CCNA Wireless Official Exam Certification Guide part 15

CCNA Wireless Official Exam Certification Guide part 15 is a best of breed Cisco® exam study guide that focuses specifically on the objectives for the CCNA® Wireless IUWNE exam. Senior instructor Brandon Carroll shares preparation hints and test-taking tips, helping you identify areas of weakness and improve both your conceptual knowledge and hands-on skills. Material is presented in a concise manner, focusing on increasing your understanding and retention of exam topics. | This chapter covers the following subjects Wireless Frame Transmission A discussion of how frames are transmitted on a wireless LAN. Wireless Frame Headers A look at the headers used in wireless transmissions. Frame Types Putting together how the frame types are used in managing and connecting to a network. A Wireless Connection A look at a wirele ss connection. CHAPTER 7 Wireless Traffic Flow and AP Discovery It is not likely that in your everyday activity you will be following the flow of traffic. At least the hope is that you will not have to. On occasion however you will need to analyze the flow of traffic in troubleshooting network issues. For this reason and just so that you have a complete understanding of what is involved in wireless transmissions you need to understand wireless traffic flow and the process of discovering an AP. In this chapter you will learn how a client finds an AP associates and sends traffic. You should do the Do I Know This Already quiz first. If you score 80 percent or higher you may want to skip to the section Exam Preparation Tasks. If you score below 80 percent you should spend the time reviewing the entire chapter. Refer to Appendix A Answers to the Do I Know This Already Quizzes to confirm your answers. Do I Know This Already Quiz The Do I Know This Already quiz helps you determine your level of knowledge of this chapter s topics before you begin. Table 7-1 details the major topics discussed in this chapter and their corresponding quiz questions. Table 7-1 Do I Know This Already Section-to-Question Mapping Foundation Topics Section Questions Wireless Frame Transmission 1-5 Wireless Frame Headers 6-7 Frame Types 8-12 1. What are the three frame types seen in a wireless LAN Choose three. a. Management b. Control c. Data d. Contention 114 CCNA Wireless Official Exam Certification Guide 2. What type of frame is used for acknowledging receipt of data a. Control b. Reply c. Null d. Management 3. What frame type is used to send beacons

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