An RF signal sometimes bends as it passes through some material other than free space. What is the term that describe this behavior?
A. Reflection B. Refraction C. Scattering D. Warping
Answer: B
Question: 2
What can an impedance mismatch In the RF cables and connectors cause?
A. Fewer MCS values In the MCS table B. Excessive VSWR C. Increased amplitude of the RF signal D. Increased range of the RF signal
Answer: B
Question: 3
What factors does not influence the distance at which an RF signal can be effectively received?
A. Free Space Path Loss B. Receiving station鈥檚 radio sensitivity C. Transmitting station鈥檚 output power D. Receiving station鈥檚 output power
Answer: D
Question: 4
A WLAN transmitter that emits a 50 mW signal is connected to a cable with 3 dB loss. If the cable is connected to an antenna with 9 dBi gain Marshall Thorpe Jersey , what is the EIRP at the antenna element?
A. 23 dBm B. 26 dBm C. 13 dBm D. 10 dBm
Answer: A
Question: 5
In a long-distance RF link, 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 Kristian Doolittle Jersey , and is a function of frequency and distance.
Answer: A
Question: 6
What wireless networking term describe the increase of RF energy in an intentional direction with the use of an antenna?
A. Directed Radiation B. Active Amplification C. Passive Gain D. Beam Digression
Answer: C
Question: 7
Which directional antenna types are commonly used by indoor Wi-Fi devices in a MIMO multiple spatial stream implementation?
A. Dish and grid B. Dipole and yagi C. Grid and sector D. Patch and panel
Answer: B
Question: 8
What statements about the beamwidth of an RF antenna are true?
A. Horizontal and vertical beamwidth are calculated at the points in which the main lobe decreases power by 3 dB B. Vertical beamwidth is displayed (in degree) on the antenna鈥檚 Azimuth chart. C. When antenna gain is lower, the beamwidth is also lower in both the horizontal and vertical dimensions. D. The beamwidth patterns on an antenna polar chart indicate the point at which the RF signal stops propagating.
Answer: A
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