Download CWNA Certified Wireless Network Administrator Official Study by Planet3 Wireless, Devin Akin PDF

By Planet3 Wireless, Devin Akin

Counseled by way of the instant LAN organization, this entire learn consultant bargains whole assurance of all ambitions for CWNA 2.0 examination PW-100. within, you can find a hundred and fifty+ perform examination questions with whole solutions, step by step routines, bankruptcy self-tests, margin notes, and masses extra that can assist you organize for this demanding examination.

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Example text

Another example that takes into consideration measurement negative from the reference point would be -26 dBm. CWNA Study Guide © Copyright 2002 Planet3 Wireless, Inc. Chapter 2 – RF Fundamentals 34 In this example, we see that -26 dBm equals -10 -10 -3 -3. 5 microwatts of power. dBi As discussed previously, gain and loss are measured in decibels. When quantifying the gain of an antenna, the decibel units are represented by dBi. The unit of measurement dBi refers only to the gain of an antenna. The “i” stands for “isotropic”, which means that the change in power is referenced against an isotropic radiator.

Which one of the following does a wireless LAN provide that a wired network does not? A. Mobility B. Centralized security C. Reliability D. VPN security 2. Which one of the following would not be an appropriate use of a wireless LAN? A. Connecting two buildings together that are on opposite sides of the street B. Connecting two computers together in a small office so they can share a printer C. Connecting a remote home to a WISP for Internet access D. Connecting two rack-mounted computers together 3.

It is not necessary for a wireless LAN administrator to thoroughly understand antenna design in order to administer the network. A couple of key points that are important to understand about antennas are: Antennas convert electrical energy into RF waves in the case of a transmitting antenna, or RF waves into electrical energy in the case of a receiving antenna. The physical dimensions of an antenna, such as its length, are directly related to the frequency at which the antenna can propagate waves or receive propagated waves.

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