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Exam Certified Wireless Network Administrator
Number CWNA-107
File Name Certified Wireless Network Administrator.examquestions.CWNA-107.2020-06-23.1e.70q.vcex
Size 42 Kb
Posted June 23, 2020
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Question 1
An RF signal sometimes bends as it passes through some material other than free space. What is the term that describes this behavior? 

  • A: Reflection
  • B: Refraction
  • C: Scattering
  • D: Warping

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

Question 3
What factor does not influence the distance at which an RF signal can be effectively received?

  • A: Free Space Path Loss
  • B: Receiving station’s radio sensitivity
  • C: Transmitting station’s output power
  • D: Receiving station’s output power

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 9dBi gain, what is the EIRP at the antenna element?

  • A: 23 dBm
  • B: 26 dBm
  • C: 13 dBm
  • D: 10 dBm

Question 5
In a long-distance RF link, which statement about Fade Margin is true?

  • A: The Fade Margin is a measurement of signal loss through free space and is a function of frequency and distance.
  • B: The Fade Margin of a long-distance radio link should be equivalent to the receiver’s low noise filter gain. 
  • C: A Fade Margin is unnecessary on a long-distance RF link if more than 80% of
  • D: Fade Margin is an additional pad of signal strength designed into the RF system to compensate for unpredictable signal fading.

Question 6
What wireless networking term describes 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

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

Question 8
What statement about the beamwidth of an RF antenna is true?

  • A: Horizontal and vertical beamwidth are calculated at the point where the main lobe decreases power by 3 dB.
  • B: Vertical beamwidth is displayed (in degrees) on the antenna’s 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.

Question 9
Which one of the following is not a factor considered when calculating the Link Budget for an outdoor point-to-point WLAN bridge link?

  • A: MU-MIMO capabilities of the bridges
  • B: Receive antenna gain
  • C: Transmit power
  • D: Operating frequency

Question 10
An IEEE 802.11 amendment is in the daft state. What impact does this draft amendment have on the 802.11 standard?

  • A: No impact: Until an amendment is ratified, it does not become part of the standard.
  • B: Devices will be released based on the draft amendment and the draft amendment features are part of the standard. 
  • C: The standard is changed to reflect the new capabilities as soon as an amendment enters the draft stage.
  • D: No impact: Draft amendments do not become part of the standard until a working group is formed.



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