Cisco CCNA CCNP CCSP exams

　
　
Exam : CENP PW0-100
Title : certified wireless network administrator(cwna)

1. In a long-distance RF link, what statement about Fade Margin is true?
A. Fade Margin is the amount of signal strength in addition to the Link Budget.
B. The Fade Margin of a long-distance RF link does not account for antenna gain.
C. Fade Margin is rarely taken into account on a long-distance RF link.
D. Fade Margin and Jamming Margin are synonymous, interchangeable terms.
Answer: A

2. Which units of measure are used to describe a calculable power quantity?
A. dB
B. dBm
C. dBi
D. mW
E. RSSI
F. dBd
Answer: BD

3. What is a valid type of lightning arrestor used with 802.11 wireless LANs?
A. Coaxial arrestor with a metal oxide varistor (MOV) input circuit
B. Parallel tuned tank-circuit arrestor
C. Coaxial arrestor with a gas discharge tube
D. Inductor-based load-sensing arrestor
Answer: C

4. Given: ABC University provides wireless access to campus buildings from their Data Center building. ABC has installed a tower on the Data Center building with a sectorized omnidirectional antenna array using 90 of horizontal beamwidth per sector.
What is the next step in configuring the antenna array?
A. Calculate Earth Bulge into the System Operating Margin (SOM).
B. Configuring the downtilt of each antenna in the array.
C. Providing DC power to each antenna in the array.
D. Adjusting each antenna’s beamwidths for optimal gain.
Answer: B

5. Given: XYZ Corporation is experiencing connectivity problems with their existing building-to-building bridge link. A brick wall on the roof of one building is partially blocking the Fresnel Zone, and the connection is dropping many frames. The administrator moves the antenna to an area not obstructed by the brick wall and then realizes the RF cable cannot reach the new location.
If an RF extension cable is used, what are the likely results?
A. The data throughput rate will increase because VSWR will decrease.
B. The Equivalent Isotropically Radiated Power (EIRP) will decrease.
C. The antenna coverage area will decrease.
D. The return loss will increase unless the impedance of the RF extension cable is equal to 50% of the antenna impedance.
E. The likelihood of a direct lightning strike will increase, placing the entire WLAN system at risk.
Answer: BC

6. What factors affect the propagation distance of an RF signal?
A. Antenna gain
B. Receiving station sensitivity
C. Fresnel zone blockage
D. Power over Ethernet (PoE) usage
E. Antenna polarization
F. Link budget calculations
Answer: AC

7. While working on a presentation document in a conference room equipped with a wireless network, you notice that, as you turn your laptop in different directions, your wireless signal strength changes. What RF signal property is primarily responsible for this change in signal strength?
A. The RF signal’s amplitude is changing due to a change in the visual line-of-sight.
B. The RF signal’s wavelength is being affected by varying antenna gain.
C. The RF signal’s multipath is changing the amount of RF absorbed by nearby objects.
D. The RF signal’s phase is oscillating due to electromagnetic interference (EMI).
E. The RF signal’s polarization is different than the receiving antenna.
Answer: E

8. What phrase describes the effect of increasing the distance that an RF wave travels when the RF antenna lobe is focused in a desired direction?
A. Polar Extension
B. Active Amplification
C. Beam Compression
D. Passive Gain
E. Phased Array Propagation
Answer: D

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