TAILIEUCHUNG - CCNA Wireless Official Exam Certification Guide part 7

CCNA Wireless Official Exam Certification Guide part 7 is a best of breed Cisco® exam study guide that focuses specifically on the objectives for the CCNA® Wireless IUWNE exam. Senior instructor Brandon Carroll shares preparation hints and test-taking tips, helping you identify areas of weakness and improve both your conceptual knowledge and hands-on skills. Material is presented in a concise manner, focusing on increasing your understanding and retention of exam topics. | 32 CCNA Wireless Official Exam Certification Guide 1. Which of the following best describes a frequency that is seen 1 million times per second a. 1 Hz b. 1000000 Mb c. 1 joule d. 1 MHz 2. What does amplitude measure a. Distance from high crest to high crest horizontally in a waveform b. Distance between two access points c. Distance from low crest to midspan in a waveform d. Height of wave from lowest crest to highest crest 3. EIRP is calculated using which of the following formulas a. EIRP transmitter power - cable loss antenna gain b. EIRP interference - cable loss antenna gain c. EIRP cable gain - cable loss antenna gain d. EIRP transmitter loss cable loss antenna gain 4. Metal desks glass light fixtures and computer screens can contribute to which influence on wireless transmissions a. Scattering b. Refraction c. Reflection d. Absorption 5. Carpet human bodies and walls can contribute to which influence on wireless transmission a. Scattering b. Refraction c. Reflection d. Absorption 6. In the Free Path Loss model objects that are farther away from a transmitter receive the same amount of signal as those that are closer to the transmitter. True or False a. True b. False Chapter 3 WLAN RF Principles 33 7. If a signal is being spread about by microparticles it is experiencing which influence on wireless transmissions a. Scattering b. Spreading c. Scarring d. Splitting e. Refracting 8. Multipath causes which of the following issues Choose all that apply. a. Redundant connectivity b. The signal becoming out of phase which can potentially cancel the signal c. The signal being received by multiple devices in the path causing security concerns d. Portions of the signal being reflected and arriving out of order 9. Scattering is caused by humidity. True or False a. True b. False 10. For line of sight LOS transmissions what can determine where signals can become out of phase a. Free Path Zone b. EIRP c. Fresnel Zone d. Phase Zone 11. Link budget is used to do which of .

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