cwts certified wireless technology specialist official study guide exam pw0 070 phần 4 pps

... Spectrum Technology Channel Frequency (GHZ) Americas EMEA Israel* China Japan 7 2 .44 2 ✓ ✓ ✓ ✓ ✓ 8 2 .44 7 ✓ ✓ ✓ ✓ ✓ 9 2 .45 2 ✓ ✓ ✓ ✓ ✓ 10 2 .45 7 ✓ ✓ ✓ ✓ ✓ 11 2 .46 2 ✓ ✓ ✓ ✓ ✓ 12 2 .46 7 ✓ ✓ ✓ 13 2 .47 2 ✓ ... Number Americas/EMEA (4 channels) 5.150–5.250 5.18 0 5.200 5.220 5. 240 36 40 44 48 Americas/EMEA (4 channels) 5.250–5.350 5.260 5.280 5.300 5.320 52 56 60...

Ngày tải lên: 10/08/2014, 12:21

... (VLANs) wireless bridges wireless controllers/switches wireless LAN routers wireless mesh networking wireless repeaters wireless VPN router 38893c02.indd 53 5/18/09 4: 37: 34 PM IEEE and Wireless ... extended to wireless LANs. Wireless LAN controllers/switches have the ability to configure broadcast domains and segregate broadcast and multicast traffic between VLANs. 38893c...

Ngày tải lên: 10/08/2014, 12:21

... Rate (mbps) 2 .4 GHz (dBm) 2 .4 GHz (dBm) Voice 5 GHz (dBm) 54 –61 –56 –58 36 –63 –58 –63 24 –67 –62 –67 12/11 –72 –67 –72 6/5.5 –79 – 74 –75 2 –81 –76 N/A 1 – 84 –79 N/A Source: Certified Wireless Network ... making setting up wireless security a one-step process. When a user pushes a hardware button on the wireless residential gateway (wireless 38893c10.indd 348 5/19/09 6...

Ngày tải lên: 10/08/2014, 12:21

... WIPS  38893flast.indd 34 5/19/09 5:57 :49 AM CWTS TM Certified Wireless Technology Specialist Official Study Guide Robert J. Bartz 38893ffirs.indd 1 5/18/09 4: 06:02 PM Introduction xxxiii 4. 4 Differentiate ... your hand is an important step in studying for the CWTS certification. The CWTS: Certified Wireless Technology Specialist Official Study Guide cover...

Ngày tải lên: 10/08/2014, 12:21

... 4: 37:35 PM Chapter 4 Radio Frequency (RF) Fundamentals for Wireless LAN Technology THE FOLLOWING CWTS EXAM OBJECTIVES ARE COVERED IN THIS CHAPTER: Define basic characteristics of Wi-Fi technology  Range, ... inches. Figure 4. 4 shows an example of wavelength. FIGURE 4. 4 The wavelength is the distance of one complete cycle, measured in centimeters or inches. 12 34 Length...

Ngày tải lên: 10/08/2014, 12:21

... Weight 0 .4 lb. (.18 Kg) Dimensions 4. 5 x 4. 5 x 0.9˝ (1 14 x 1 14 x 23 mm) 38893c06.indd 1 74 5/18/09 4: 07:36 PM 38893c06.indd 2 04 5/18/09 4: 07 :45 PM Basic RF Antenna Concepts 165 FIGURE 6 .4 Access ... 11 Mbps. Ethernet is not a wireless LAN technology. 14. C, D. IEEE 802.11a wireless LANs operate in the 5 GHz UNII bands. 802.11b/g wireless LANs operate in the 2...

Ngày tải lên: 10/08/2014, 12:21

... 279 5/19/09 6:11: 54 AM 38893c08.indd 282 5/19/09 6:11: 54 AM Antenna Use Consideration 271 Point of sale devices ÛN Voice handsets ÛN Other wireless devices used in various wireless LAN applications ... with devices in the 2 .4 GHz ISM band. Wireless 3G and cellular telephones work in other frequency ranges and do not affect wireless LANs. 900 MHz is not used by IEEE 802.11 w...

Ngày tải lên: 10/08/2014, 12:21

... 83 – 84 downloading, 399 – 40 0 for PCMCIA cards, 64 restarting Windows after installing, 317 upgrades, 398 – 40 1 manual process for, 40 0 – 40 1 38893bindex.indd 44 7 5/18/09 4: 09:10 PM 43 6 Glossary Mini-PCI ... (DSL), 40 DHCP address for modem, 388, 389 direct-sequence spread spectrum (DSSS), 140 , 141 channels, 141 – 143 and data rates, 227 Wi-Fi interference from, 2 9...

Ngày tải lên: 10/08/2014, 12:21

... 65 348 .book Page 46 Monday, October 22, 2007 4: 27 PM 64 Chapter 2  Customizing and Configuring Windows Vista FIGURE 2.21 Local user accounts FIGURE 2.22 Administrators group Properties 65 348 .book ... dialog box shown in Figure 2.8. 65 348 .book Page 50 Monday, October 22, 2007 4: 27 PM 30 Chapter 1  Installing Windows Vista 3. Unsigned 4. Feature criteria (for example, WDDM com...

Ngày tải lên: 10/08/2014, 13:20

... click Finish. 65 348 .book Page 143 Monday, October 22, 2007 4: 27 PM 162 Chapter 3  Installing, Configuring, and Troubleshooting Devices FIGURE 3 .43 Fax Setup wizard FIGURE 3 .44 Fax Setup wizard: ... folder you selected. EXERCISE 3.2 (continued) 65 348 .book Page 145 Monday, October 22, 2007 4: 27 PM Working with Digital Cameras and Camcorders 143 FIGURE 3.27 The Import Video wizard ...

Ngày tải lên: 10/08/2014, 13:20