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Tamra Forde Freedom Business Opportunity Question: 1
What word describes the bending of an RF signal as it passes through a medium of a varying density from that of free space?
A. Diffraction B. Reflection C. Refraction D. Diffusion E. Scattering
Answer: C
Question: 2
What can cause an excessively high VSWR (Voltage Standing Wave Ratio) in a WLAN RF transmission line?
A. An impedance mismatch inthe RF cables and connectors B. Reflected direct current (DC) voltage on the main RF signal line C. Attenuation of the RF signal as it travels along the main signal path D. Crosstalk (inductance) between adjacent RF conductors
Answer: A
Question: 3
What factors influence the distance that an RF signal can be effectively received? (Choose 3)
A. Transmitting station鈥檚 power source B. Receiving station鈥檚 radio sensitivity C. Free Space Path Loss D. MAC layer encryption E. Transmitting station鈥檚output power F. Temperature in the Fresnel zone
As an RF wave propagates through space, the wave front experiences natural expansion that reduces its signal strength in an are a. What term describes the rate at which this expansion happens? A. MU-MIMO B. Inverse square law C. Fresnel zone thinning D. Ohm鈥檚 law
Answer: B
Question: 5
Return Loss is the decrease of forward energy in a system when some of the power is being reflected back toward the transmitter. What will cause high return loss in an RF transmission system Cheap Custom Jerseys From China , including the radio, cables, connectors and antenna?
A. A Voltage Standing Wave Ratio (VSWR) of 1:1 B. An impedance mismatch between components in the RF system C. The use of cables longer than onemeter in the RF system D. High output power at the transmitter and use of a low-gain antenna
Answer: B
Question: 6
What factors are taken into account when calculating the Link Budget of a point-to-point outdoor WLAN bridge link?
A. Operating frequency B. Transmit antenna gain C. Transmit power D. Antenna height
A WLAN transmitter that emits a 200 mW signal is connected to a cable with 3 dB loss. If the cable is connected to an antenna with 10 dBi gain, what is the EIRP at the antenna element?
A. 10 dBm B. 13 dBm C. 20 dBm D. 26 dBm E. 30 dBm
Answer: E
Question: 8
In a long-distance RF link Cheap Custom Jerseys , what statement about Fade Margin is true?
A. Fade Margin is an additional pad of signal strength designed into theRF system to compensate for unpredictable signal fading. B. The Fade Margin of a long-distance radio link should be equivalent to the receiver鈥檚 antenna gain. C. A Fade Margin is unnecessary on a long-distance RF link if more than 80% of the first Fresnelzone is clear of obstructions. D. The Fade Margin is a measurement of signal loss through free space, and is a function of frequency and distance.
Answer: A
Question: 9
Which unit of measurement is an absolute unit that is used to quantify power levels on a linear scale?
A. dBm B. SNR C. RSSI D. VSWR
Answer: A
Question: 10
An 802.11 WLAN transmitter that emits a 50 mW signal is connected to a cable with 3 dB of loss. The cable is connected to an antenna with 16 dBi of gain. What is the EIRP power output?
A. 2 mW B. 500 mW C. 250 mW D. 1000 mW
Answer: D
Total Views: 60Word Count: 544See All articles From Author Alkyd Coatings Market Technology Insights, Trends Cheap Custom Made Jerseys Sale , Sales and Forecast 2025
by minu@123 · January 31, 2019
Alkyd surface coatings are the most highly consumed types of coatings used worldwide, despite the increasing use of other film formers. Global Alkyd Coatings market size will increase to xx Million US$ by 2025 Cheap Custom Made Jerseys Free Shipping , from xx Million US$ in 2018, at a CAGR of xx% during the forecast period. In this study, 2018 has been considered as the base year and 2019 to 2025 as the forecast period to estimate the market size for Alkyd Coatings.
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