File Info
| Exam | Certified Wireless Network Administrator |
| Number | CWNA-108 |
| File Name | CWNP.CWNA-108.VCEplus.2020-10-15.60q.vcex |
| Size | 33 KB |
| Posted | Oct 15, 2020 |
| Download | CWNP.CWNA-108.VCEplus.2020-10-15.60q.vcex |
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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?
- Refraction
- Warping
- Scattering
- Reflection
Correct answer: A
Question 2
What can an impedance mismatch in the RF cables and connectors cause?
- Increased range of the RF signal
- Fewer MCS values in the MCS table
- Increased amplitude of the RF signal
- Excessive VSWR
Correct answer: D
Question 3
What factor does not influence the distance at which an RF signal can be effectively received?
- Receiving station's radio sensitivity
- Receiving station's output power
- Transmitting station's output power
- 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?
- 26 dBm
- 13 dBm
- 23 dBm
- 10 dBm
Correct answer: C
Question 5
In a long-distance RF link, what statement about Fade Margin is true?
- A Fade Margin is unnecessary on a long-distance RF link if more than 80% of the first Fresnel zone is clear of obstructions.
- The Fade Margin is a measurement of signal loss through free space and is a function of frequency and distance.
- Fade Margin is an additional pad of signal strength designed into the RF system to compensate for unpredictable signal fading.
- 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?
- Directed Radiation
- Beam Digression
- Passive Gain
- 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?
- Dipole and yagi
- Grid and sector
- Patch and panel
- Dish and grid
Correct answer: C
Question 8
What statement about the beamwidth of an RF antenna is true?
- Horizontal and vertical beamwidth are calculated at the points where the main lobe decreases power by 3 dB.
- The beamwidth patterns on an antenna polar chart indicate the point at which the RF signal stops propagating.
- When antenna gain is lower, the beamwidth is also lower in both the horizontal and vertical dimensions.
- 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?
- Operating frequency
- MU-MIMO capabilities of the bridges
- Receive antenna gain
- Transmit power
Correct answer: B
Question 10
What best describes WPA2 in relation to 802.11 wireless networks?
- WPA2 is the standard that defines security for WLANs.
- WPA2 is a certification created by the Wi-Fi Alliance that validates devices correctly implement CCMP/AES.
- WPA2 is the second version of WPA and it enhances security through the use of TKIP instead of WEP.
- WPA2 is specified in the 802.11 standard as implementing CCMP/AES.
Correct answer: A
