Download Certified Wireless Network Administrator.CWNA-108.VCEplus.2020-10-15.60q.vcex

Vendor: CWNP
Exam Code: CWNA-108
Exam Name: Certified Wireless Network Administrator
Date: Oct 15, 2020
File Size: 33 KB
Downloads: 1

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Demo Questions

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?
  1. Refraction
  2. Warping
  3. Scattering
  4. Reflection
Correct answer: A
Question 2
What can an impedance mismatch in the RF cables and connectors cause?
  1. Increased range of the RF signal
  2. Fewer MCS values in the MCS table
  3. Increased amplitude of the RF signal
  4. Excessive VSWR
Correct answer: D
Question 3
What factor does not influence the distance at which an RF signal can be effectively received?
  1. Receiving station's radio sensitivity
  2. Receiving station's output power
  3. Transmitting station's output power
  4. Free Space Path Loss
Correct answer: A
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?
  1. 26 dBm 
  2. 13 dBm 
  3. 23 dBm
  4. 10 dBm
Correct answer: C
Question 5
In a long-distance RF link, what statement about Fade Margin is true?
  1. A Fade Margin is unnecessary on a long-distance RF link if more than 80% of the first Fresnel zone is clear of obstructions.
  2. The Fade Margin is a measurement of signal loss through free space and is a function of frequency and distance.
  3. Fade Margin is an additional pad of signal strength designed into the RF system to compensate for unpredictable signal fading.
  4. The Fade Margin of a long-distance radio link should be equivalent to the receiver's low noise filter gain.
Correct answer: C
Question 6
What wireless networking term describes the increase of RF energy in an intentional direction with the use of an antenna?
  1. Directed Radiation
  2. Beam Digression
  3. Passive Gain
  4. Active Amplification
Correct answer: C
Question 7
Which directional antenna types are commonly used by indoor Wi-Fi devices in a MIMO multiple spatial stream implementation?
  1. Dipole and yagi
  2. Grid and sector
  3. Patch and panel
  4. Dish and grid
Correct answer: C
Question 8
What statement about the beamwidth of an RF antenna is true?
  1. Horizontal and vertical beamwidth are calculated at the points where the main lobe decreases power by 3 dB.
  2. The beamwidth patterns on an antenna polar chart indicate the point at which the RF signal stops propagating.
  3. When antenna gain is lower, the beamwidth is also lower in both the horizontal and vertical dimensions.
  4. Vertical beamwidth is displayed (in degrees) on the antenna's Azimuth chart.
Correct answer: A
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?
  1. Operating frequency
  2. MU-MIMO capabilities of the bridges
  3. Receive antenna gain
  4. Transmit power
Correct answer: B
Question 10
What best describes WPA2 in relation to 802.11 wireless networks?
  1. WPA2 is the standard that defines security for WLANs.
  2. WPA2 is a certification created by the Wi-Fi Alliance that validates devices correctly implement CCMP/AES.
  3. WPA2 is the second version of WPA and it enhances security through the use of TKIP instead of WEP.
  4. WPA2 is specified in the 802.11 standard as implementing CCMP/AES.
Correct answer: A

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