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| Certification Vendor: | CWNP |
|---|---|
| Exam Name: | CWNP Wireless Network Administrator (CWNA) |
| Exam Number: | CWNA-109 |
| Exam Duration: | 90 minutes |
| Related Certifications: | CWAP CWSP CWDP CWNE |
| Certificate Validity Period: | 3 years |
| Real Exam Qty: | 60 |
| Exam Price: | $274.99 USD |
| Exam Format: | Multiple Answer, Multiple Choice |
| Available Languages: | English |
| Passing Score: | 70% |
| Recommended Training: | CWNA-109 Official Study Guide CWNA-109 eLearning Course |
| Exam Registration: | Prometric Testing Centers CWNP Official Registration |
| Sample Questions: | CWNP CWNA-109 Sample Questions |
| Exam Way: | Online remote proctored or in-person at Prometric testing centers |
| Pre Condition: | No formal prerequisites; basic networking knowledge recommended |
| Official Syllabus URL: | https://www.cwnp.com/certifications/cwna |
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NEW QUESTION # 101
What cause of hidden nodes within a BSS would be more likely lead to an increase in collisions and retries?
Answer: A
NEW QUESTION # 102
You are installing an AP to be used by 27 laptops. All laptops will connect on the 5 GHz frequency band. A neighbor network uses channels 1 and 6. What channel should be used for this AP and why?
Answer: B
Explanation:
A 5 GHz channel should be used for this AP because channels 1 and 6 are 2.4 GHz channels and they have no impact on the decision. The 5 GHz frequency band offers more non-overlapping channels than the 2.4 GHz frequency band, which reduces interference and improves performance. The 5 GHz frequency band also supports higher data rates and wider channel bandwidths than the 2.4 GHz frequency band, which increases capacity and throughput. The 5 GHz frequency band also has less interference from other devices and sources than the 2.4 GHz frequency band, which enhances reliability and quality of service. Therefore, it is recommended to use the 5 GHz frequency band for WLANs whenever possible. Channels 1 and 6 are two of the three non-overlapping channels in the 2.4 GHz frequency band (the other one is channel 11). They are used by a neighbor network in this scenario, but they do not affect the channel selection for this AP because they operate in a different frequency band than the 5 GHz frequency band. Channel 6 is not always best to use; it depends on the interference and congestion level in the environment. Channel 1 is not best to use because it has a lower frequency than channel 6; frequency does not determine channel quality or performance. Channel 11 is not best to use because it is also a 2.4 GHz channel and it may interfere with channels 1 and 6. References: CWNA-109 Study Guide, Chapter 4: Antenna Systems and Radio Frequency (RF) Components, page 113
NEW QUESTION # 103
What type of antenna is commonly used indoors, provides an omnidirectional horizontal radiation pattern, and is often mounted on a wall or built into an access point?
Answer: D
Explanation:
A dipole antenna is a common omnidirectional antenna used in indoor WLAN deployments. It radiates RF energy in a 360-degree horizontal pattern, resembling a donut shape when viewed from the side, with nulls directly above and below the antenna. Dipole antennas are frequently built into access points or mounted externally, and are well-suited for environments where coverage is needed in all directions around the antenna, such as open office spaces.
NEW QUESTION # 104
A wireless engineer needs to calculate the total loss of an RF signal as it travels through free space between a transmitting and receiving antenna. What is this calculation called?
Answer: D
Explanation:
Free space path loss (FSPL) is the loss of signal strength that occurs as an RF wave propagates through free space, with no obstructions, over a given distance. FSPL increases as the distance between the transmitter and receiver increases, and it also increases with higher frequencies.
FSPL is a critical calculation in designing outdoor point-to-point and point-to-multipoint bridge links, as it directly affects the link budget calculation needed to ensure adequate signal strength at the receiver.
NEW QUESTION # 105
A wireless engineer is troubleshooting an area where far-away clients associated with an AP experience poor performance because a nearby client is transmitting at a much higher signal level, effectively drowning out the weaker signal at the receiver. What is this condition called?
Answer: A
Explanation:
The near/far problem occurs when a client station located close to an access point transmits at a much higher received signal strength than a client station located farther away. This disparity can cause the AP's receiver to have difficulty properly receiving the weaker, distant signal, particularly if the strong nearby signal is transmitting at the same time or causing elevated noise levels. This can effectively "drown out" the distant client, resulting in poor performance or connectivity issues for stations farther from the AP.
NEW QUESTION # 106
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