Download Certified Wireless Network Administrator.CWNA-107.PracticeTest.2020-06-23.70q.vcex

Vendor: CWNP
Exam Code: CWNA-107
Exam Name: Certified Wireless Network Administrator
Date: Jun 23, 2020
File Size: 42 KB
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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. Reflection
  2. Refraction
  3. Scattering
  4. Warping
Correct answer: B
Question 2
What can an impedance mismatch in the RF cables and connectors cause?
  1. Fewer MCS values in the MCS table
  2. Excessive VSWR
  3. Increased amplitude of the RF signal
  4. Increased range of the RF signal
Correct answer: B
Explanation:
Reference https://books.google.com.pk/books?id=uA68E68OqQgC&pg=PA235&lpg=PA235&dq=impedance+mismatch+in+the+RF+cables+and+connectors+cause&source=bl&ots=WEynkTBqO1&sig=-Hm_d26REw_UrVZtz20xErL-4Rg&hl=en&sa=X&ved=0ahUKEwj5rvW0j57ZAhVMzqQKHeCGB0kQ6AEISDAF#v=onepage&q=impedance%20mismatch%20in%20the%20RF%20cables%20and%20connectors%20cause&f=false
Reference https://books.google.com.pk/books?id=uA68E68OqQgC&pg=PA235&lpg=PA235&dq=impedance+mismatch+in+the+RF+cables+and+connectors+cause&source=bl&ots=WEynkTBqO1&sig=-Hm_d26REw_UrVZtz20xErL-4Rg&hl=en&sa=X&ved=0ahUKEwj5rvW0j57ZAhVMzqQKHeCGB0kQ6AEISDAF#v=onepage&q=impedance%20mismatch%20in%20the%20RF%20cables%20and%20connectors%20cause&f=false
Question 3
What factor does not influence the distance at which an RF signal can be effectively received?
  1. Free Space Path Loss
  2. Receiving station’s radio sensitivity
  3. Transmitting station’s output power
  4. Receiving station’s output power
Correct 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 9dBi gain, what is the EIRP at the antenna element?
  1. 23 dBm
  2. 26 dBm
  3. 13 dBm
  4. 10 dBm
Correct answer: A
Question 5
In a long-distance RF link, which statement about Fade Margin is true?
  1. The Fade Margin is a measurement of signal loss through free space and is a function of frequency and distance.
  2. The Fade Margin of a long-distance radio link should be equivalent to the receiver’s low noise filter gain. 
  3. A Fade Margin is unnecessary on a long-distance RF link if more than 80% of
  4. Fade Margin is an additional pad of signal strength designed into the RF system to compensate for unpredictable signal fading.
Correct answer: D
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. Active Amplification
  3. Passive Gain
  4. Beam Digression
Correct answer: C
Explanation:
Reference https://books.google.com.pk/books?id=saC_2j-IwwIC&pg=PA51&lpg=PA51&dq=passive+gain+increase+of+RF+energy+in+an+intentional+direction+with+the+use+of+an+antenna&source=bl&ots=ePmfHdkUks&sig=TzpBqUuomGckVXy6kPAO8t2l_Jc&hl=en&sa=X&ved=0ahUKEwjwtb6Ds57ZAhUBesAKHfpCCSAQ6AEIKjAB#v=onepage&q=passive%20gain%20increase%20of%20RF%20energy%20in%20an%20intentional%20direction%20with%20the%20use%20of%20an%20antenna&f=false
Reference https://books.google.com.pk/books?id=saC_2j-IwwIC&pg=PA51&lpg=PA51&dq=passive+gain+increase+of+RF+energy+in+an+intentional+direction+with+the+use+of+an+antenna&source=bl&ots=ePmfHdkUks&sig=TzpBqUuomGckVXy6kPAO8t2l_Jc&hl=en&sa=X&ved=0ahUKEwjwtb6Ds57ZAhUBesAKHfpCCSAQ6AEIKjAB#v=onepage&q=passive%20gain%20increase%20of%20RF%20energy%20in%20an%20intentional%20direction%20with%20the%20use%20of%20an%20antenna&f=false
Question 7
Which directional antenna types are commonly used by indoor Wi-Fi devices in a MIMO multiple spatial stream implementation?
  1. Dish and grid
  2. Dipole and yagi
  3. Grid and sector
  4. Patch and panel
Correct answer: D
Explanation:
Question 8
What statement about the beamwidth of an RF antenna is true?
  1. Horizontal and vertical beamwidth are calculated at the point where the main lobe decreases power by 3 dB.
  2. Vertical beamwidth is displayed (in degrees) on the antenna’s Azimuth chart.
  3. When antenna gain is lower, the beamwidth is also lower in both the horizontal and vertical dimensions.
  4. The beamwidth patterns on an antenna polar chart indicate the point at which the RF signal stops propagating.
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. MU-MIMO capabilities of the bridges
  2. Receive antenna gain
  3. Transmit power
  4. Operating frequency
Correct answer: A
Question 10
An IEEE 802.11 amendment is in the daft state. What impact does this draft amendment have on the 802.11 standard?
  1. No impact: Until an amendment is ratified, it does not become part of the standard.
  2. Devices will be released based on the draft amendment and the draft amendment features are part of the standard. 
  3. The standard is changed to reflect the new capabilities as soon as an amendment enters the draft stage.
  4. No impact: Draft amendments do not become part of the standard until a working group is formed.
Correct answer: A
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