cwna certified wireless network administrator official study guide phần 5 doc

... 930 FCC: ISM 902-928MHz 2.4000-2 .50 00 GHz 2.4000-2.48 35 GHz 5. 7 25- 5.8 75 GHz FCC: FCC: ISM 2.400 GHz 2.4 25 2. 450 2.4 75 2 .50 0 IEEE: ISM 5. 7 25 GHz 5. 7 75 5.8 25 5.8 75 5.000 GHz 5. 250 5. 500 5. 750 6.000 5. 7 25 - 5. 8 25 GHz 5. 25 - 5. 35 ... specified that wireless LANs may use. They are the 900 MHz, 2.4 GHz, and 5. 8 GHz bands. CWNA Study Gui...

Ngày tải lên: 14/08/2014, 14:20

... peacefully. CWNA Study Guide © Copyright 2002 Planet3 Wireless, Inc. 15 Chapter 1 - Introduction to Wireless LANs Answers to Review Questions 1. A. The most alluring feature of a wireless network ... discussed. In addition to wireless LANs (WLANs), wireless personal area networks (WPANs), wireless metropolitan area networks (WMANs), and wireless wide area netw...

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... MHz to 5 MHz, the maximum data rate was increased to 10 Mbps. CWNA Study Guide © Copyright 2002 Planet3 Wireless, Inc. Chapter 4 – Wireless LAN Infrastructure Devices 82 FIGURE 4.9 A wireless ... 4.2 illustrates where an access point is used on a wireless LAN. CWNA Study Guide © Copyright 2002 Planet3 Wireless, Inc. 75 Chapter 4 – Wireless LAN Infrastructur...

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... Figure 10 .5 illustrates how protocol filtering works in a wireless LAN. CWNA Study Guide © Copyright 2002 Planet3 Wireless, Inc. Chapter 10 – Wireless LAN Security 270 FIGURE 10 .5 Protocol ... GHz ISM band CWNA Study Guide © Copyright 2002 Planet3 Wireless, Inc. 2 45 Chapter 9 –Troubleshooting Wireless LAN Installations FIGURE 9. 15 Antenna Wind Loading on P...

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... additional access points. CWNA Study Guide © Copyright 2002 Planet3 Wireless, Inc. CWNA Study Guide © Copyright 2002 Planet3 Wireless, Inc. Antennas and Accessories CWNA Exam Objectives ... Converter CWNA Study Guide © Copyright 2002 Planet3 Wireless, Inc. Chapter 4 – Wireless LAN Infrastructure Devices 102 20. D. A USB adapter connects a computer’s USB...

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... size that will trigger CWNA Study Guide © Copyright 2002 Planet3 Wireless, Inc. CWNA Study Guide © Copyright 2002 Planet3 Wireless, Inc. MAC and Physical Layers CWNA Exam Objectives ... overhead of up to 70%, while a congested wireless network remains somewhat constant at around 50 - 55 % throughput. CWNA Study Guide © Copyright 2002 Planet3 Wireless, Inc...

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... security measures are not in place. CWNA Study Guide © Copyright 2002 Planet3 Wireless, Inc. 289 Chapter 10 – Wireless LAN Security 5. Which piece of information on a wireless LAN is encrypted with ... specific intent of the network designer, the cell sizes are too large. CWNA Study Guide © Copyright 2002 Planet3 Wireless, Inc. 291 Chapter 10 – Wireless LAN Securit...

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... control protocol. CWNA Study Guide © Copyright 2002 Planet3 Wireless, Inc. CWNA Study Guide © Copyright 2002 Planet3 Wireless, Inc. Glossary CHAPTER 5 Appendix A – ... detect a collision. After CWNA Study Guide © Copyright 2002 Planet3 Wireless, Inc. 355 Glossary independent basic service set (IBSS) - An IEEE 802.11-based wireless network...

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... Wireless LAN Association 155 Competing Technologies 155 HomeRF 156 Bluetooth 156 Infrared Data Association (IrDA) 157 Infrared 157 Wireless LAN Interoperability Forum (WLIF) 158 Key ... (DSSS) 55 How DSSS Works 55 Direct Sequence Systems 55 Channels 56 Effects of Narrow Band Interference 58 FCC Rules affecting DSSS 58 Comparing FHSS and DSSS 58 Narrowband Interfere...

Ngày tải lên: 14/08/2014, 14:20

... with wireless networks. Just as with WEP keys, certificates (which are authentication documents) are placed on CWNA Study Guide © Copyright 2002 Planet3 Wireless, Inc. Chapter 7 – 802.11 Network ... synchronize wireless communication on the wireless LAN. Beacons serve several functions, including the following. CWNA Study Guide © Copyright 2002 Planet3 Wireless, In...

Ngày tải lên: 14/08/2014, 14:21