cwna certified wireless network administrator official study guide phần 10 pptx

... a traditional data link control protocol. CWNA Study Guide © Copyright 2002 Planet3 Wireless, Inc. CWNA Study Guide © Copyright 2002 Planet3 Wireless, Inc. Glossary CHAPTER ...  Outdoor antenna placement  Spot checks CWNA Study Guide © Copyright 2002 Planet3 Wireless, Inc. CWNA Study Guide © Copyright 2002 Planet3 Wireless, Inc. RF in Persp...

Ngày tải lên: 14/08/2014, 14:20

... Questions 100 Antennas and Accessories 103 RF Antennas 105 Omni-directional (Dipole) Antennas 105 Usage 107 Semi-directional Antennas 108 Usage 109 Highly-directional Antennas 110 Usage 110 ... classroom, industrial, and healthcare CWNA Study Guide © Copyright 2002 Planet3 Wireless, Inc. xvi Introduction Introduction This Official CWNA Study Guide is inten...

Ngày tải lên: 14/08/2014, 14:20

... data on the wireless network, guaranteeing that all traffic is from authenticated devices only. CWNA Study Guide © Copyright 2002 Planet3 Wireless, Inc. 197 Chapter 7 – 802.11 Network Architecture ... synchronize wireless communication on the wireless LAN. Beacons serve several functions, including the following. CWNA Study Guide © Copyright 2002 Planet3 Wireless...

Ngày tải lên: 14/08/2014, 14:21

... factor of 2 one time yielding the following: 1 mW x 10 = 10 mW 10 mW x 10 = 100 mW 100 mW x 10 = 1,000 mW 1,000 mW x 10 = 10, 000 mW 10, 000 mW x 2 = 20,000 mW = 20 watts So, we now see ... Power level chart -40 dBm -30 dBm -20 dBm -10 dBm 0 dBm +10 dBm +20 dBm +30 dBm +40 dBm 100 nW 1 uW 10 uW 100 uW 1 mW 10 mW 100 mW 1,000 mW 10, 000 mW -12 dBm -9...

Ngày tải lên: 14/08/2014, 14:20

... 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 bridge in repeater ... filtering capabilities allowing the administrator to control traffic across the wireless link. CWNA Study Guide © Copyright 2002 Planet3 Wireless, Inc. 83 Chapter 4 – Wirele...

Ngày tải lên: 14/08/2014, 14:20

... 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 ... Dish Ranges from 4-25 Ranges from 4-21 CWNA Study Guide © Copyright 2002 Planet3 Wireless, Inc. 101 Chapter 4 – Wireless LAN Infrastructure Devices 10. C. Wireless I...

Ngày tải lên: 14/08/2014, 14:20

... specified that wireless LANs may use. They are the 900 MHz, 2.4 GHz, and 5.8 GHz bands. CWNA Study Guide © Copyright 2002 Planet3 Wireless, Inc. CWNA Study Guide © Copyright 2002 Planet3 Wireless, ... only extend to 100 meters and still be used for reliable data transmission, PoE should not be used on cable lengths over 100 meters. CWNA Study Guide © Copyright 20...

Ngày tải lên: 14/08/2014, 14:20

... physical space. CWNA Study Guide © Copyright 2002 Planet3 Wireless, Inc. CWNA Study Guide © Copyright 2002 Planet3 Wireless, Inc. Troubleshooting Wireless LAN Installations CWNA Exam Objectives ... size that will trigger CWNA Study Guide © Copyright 2002 Planet3 Wireless, Inc. CWNA Study Guide © Copyright 2002 Planet3 Wireless, Inc. MAC and Physica...

Ngày tải lên: 14/08/2014, 14:20

... medium. 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 ... channel use with wireless LANs is imperative for any good wireless LAN administrator. As a wireless LAN consultant, you will undoubtedly CWNA Study Guide © C...

Ngày tải lên: 14/08/2014, 14:20

... B. 40-bit D. 128-bit CWNA Study Guide © Copyright 2002 Planet3 Wireless, Inc. Chapter 10 – Wireless LAN Security 278 the access points and the wired upstream network. As its name suggests, ... 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 wi...

Ngày tải lên: 14/08/2014, 14:20