Download Certified Wireless Network Administrator.VCEplus.CWNA-108.2020-10-15.1e.60q.vcex

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Exam Certified Wireless Network Administrator
Number CWNA-108
File Name Certified Wireless Network Administrator.VCEplus.CWNA-108.2020-10-15.1e.60q.vcex
Size 33 Kb
Posted October 15, 2020
Downloads 1

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

Question 2
What can an impedance mismatch in the RF cables and connectors cause?

  • A: Increased range of the RF signal
  • B: Fewer MCS values in the MCS table
  • C: Increased amplitude of the RF signal
  • D: Excessive VSWR

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

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

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

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

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

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: Beam Digression
  • C: Passive Gain
  • D: Active Amplification

Question 7
Which directional antenna types are commonly used by indoor Wi-Fi devices in a MIMO multiple spatial stream implementation?

  • A: Dipole and yagi
  • B: Grid and sector
  • C: Patch and panel
  • D: Dish and grid

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

  • A: Horizontal and vertical beamwidth are calculated at the points where the main lobe decreases power by 3 dB.
  • B: The beamwidth patterns on an antenna polar chart indicate the point at which the RF signal stops propagating.
  • C: When antenna gain is lower, the beamwidth is also lower in both the horizontal and vertical dimensions.
  • D: Vertical beamwidth is displayed (in degrees) on the antenna's Azimuth chart.

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

Question 10
What best describes WPA2 in relation to 802.11 wireless networks?

  • A: WPA2 is the standard that defines security for WLANs.
  • B: WPA2 is a certification created by the Wi-Fi Alliance that validates devices correctly implement CCMP/AES.
  • C: WPA2 is the second version of WPA and it enhances security through the use of TKIP instead of WEP.
  • D: WPA2 is specified in the 802.11 standard as implementing CCMP/AES.


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