new ccna study material

new ccna study material.preclude the need for a wired connection. The problem in making it feasible is how to ensure that products developed under the responsibility of the vendor meet the interoperability established by the standards committee. Nevertheless, there are some vendors who have tested this technology successfully in a laboratory environment.8.2.5 Other Types of Interference Other types of interference can occur in the same frequency band. These devices pose interference that may not be the most obvious, but should be considered. These interferences are as follows. Microwaves (operating at 1.40 GHz).Wireless XII cameras (operating at 2.4 GHz) o Radar systems (operating at 2 to 4 GHz for medium-range distance surveillance, terminal traffic control, and remote weather monitoring, and at 4 to8GHz for long-range tracking and airborne weather systems). Motion sensors (operating at 2.4GHz)° Fluorescent lighting (operating at 20,000Hz or higher)Game controllers and adapters (typically operate at 2.5GHz) 0 When dealing with wireless deployments, tools can be used to determine signal strength and coverage, though knowing these additional sources of interference will save you a lot of time in determining where to place APs and clients.8.3 Exam Preparation Tasks8.3.1 Review the examination points to focus on the points marked with the "examination points" icon in the margin of the page that are the focus of the chapter. Table 8.2 lists these exam points.Table 8-2 Exam Points for Chapter 8Figure 8-1 Use of a Standard Cordless PhoneFigure 8-2 Bluetooth Microweb