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CWNP CWNA-109 Exam Overview:

Certification Vendor:CWNP
Exam Name:CWNP Certified Wireless Network Administrator (CWNA)
Exam Number:CWNA-109
Available Languages:English
Exam Duration:90 minutes
Real Exam Qty:60
Exam Price:USD 250
Passing Score:70%
Certificate Validity Period:3 years
Related Certifications:Certified Wireless Network Administrator (CWNA)
Exam Format:Drag-and-Drop, Multiple Choice, Multiple Select
Sample Questions:CWNP CWNA-109 Sample Questions
Exam Way:Online (Proctored) or Authorized Testing Center
Pre Condition:No formal prerequisites, but foundational networking knowledge recommended
Official Syllabus URL:https://www.cwnp.com/certifications/cwna/

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CWNP CWNA-109 Exam Syllabus Topics:

TopicDetails
Topic 1
  • WLAN Network Security: It addresses the concepts of weak security options, security mechanisms for enterprise WLANs, and security options and tools used in wireless networks.
Topic 2
  • Radio Frequency (RF) Technologies: This topic explains the basic features and behavior of RF. It also discusses applying the basic concepts of RF mathematics and measurement. Lastly, the topic covers RF signal characteristics and the functionality of RF antennas.
Topic 3
  • WLAN Network Architecture and Design Concepts: This topic deals with describing and implementing Power over Ethernet (PoE). Furthermore, the topic covers different wireless LAN architectures, coverage requirements, roaming considerations, and common proprietary features in wireless networks.
Topic 4
  • RF Validation and WLAN remediation: This topic covers RF interference, WLAN performance, the basic features of validation tools, and common wireless issues.

CWNP Wireless Network Administrator (CWNA) Sample Questions (Q90-Q95):

NEW QUESTION # 90
What is the purpose of an RF connector's impedance rating, and what is the standard impedance used in 802.11 WLAN systems?

Answer: C

Explanation:
Impedance is a measure of the opposition to current flow in an RF circuit, and it is critical that all components in an RF system, including cables, connectors, and antennas, share the same impedance rating. In 802.11 WLAN systems, the standard impedance is 50 ohms. When impedance is mismatched between components, some of the signal is reflected back toward the source instead of being radiated by the antenna, resulting in signal loss and reduced performance, a condition measured using Voltage Standing Wave Ratio (VSWR).


NEW QUESTION # 91
When antenna gain is reported in dBi, the gain of the antenna is compared to what theoretical radiator?

Answer: D

Explanation:
An isotropic radiator is a theoretical point source of electromagnetic radiation that radiates equally in all directions. It has no physical dimensions and no preferred direction of radiation. It is used as a reference for antenna gain because it represents the ideal case of a perfect omnidirectional antenna12 Antenna gain is a measure of how well an antenna concentrates its radiated power in a certain direction. It is expressed in decibels (dB) relative to a reference antenna. Whenthe reference antenna is an isotropic radiator, the antenna gain is denoted by dBi, which stands for decibels relative to isotropic12 For example, an antenna with a gain of 3 dBi means that it radiates 3 dB more power in its main direction than an isotropic radiator would. Conversely, an antenna with a gain of -3 dBi means that it radiates 3 dB less power in its main direction than an isotropic radiator would12


NEW QUESTION # 92
A wireless engineer is troubleshooting a WLAN and observes a high number of retransmissions on a particular access point. What is a likely cause of this issue?

Answer: D

Explanation:
High retransmission rates typically indicate that frames are being corrupted or lost in transit, often due to RF interference, low signal-to-noise ratio (SNR), multipath issues, or co-channel/adjacent channel interference. When a frame is not properly received or fails its Frame Check Sequence (FCS), the receiver does not send an acknowledgment, prompting the sender to retransmit the frame. Excessive retransmissions consume airtime and reduce overall throughput and network capacity, and are a common symptom investigated during WLAN troubleshooting.


NEW QUESTION # 93
What best describes WPA2 in relation to 802.11 wireless networks?

Answer: D

Explanation:
WPA2 (Wi-Fi Protected Access 2) is a security certification program developed by the Wi-Fi Alliance to secure wireless computer networks. It is important to understand the following:
* WPA2 and the 802.11 Standard: While WPA2 is based on elements of the 802.11i amendment to the
802.11 standard, it is not itself a standard but rather a certification to ensure devices comply with certain security criteria, including the correct implementation of CCMP (Counter Mode Cipher Block Chaining Message Authentication Code Protocol) and AES (Advanced Encryption Standard).
* CCMP/AES Implementation: WPA2 enhances the security of wireless networks by using CCMP for encryption, which is based on AES, a robust encryption algorithm. This represents a significant security improvement over WEP (Wired Equivalent Privacy) and WPA (Wi-Fi Protected Access) that used TKIP
* (Temporal Key Integrity Protocol).
* WPA vs. WPA2: WPA was the interim security enhancement over WEP, utilizing TKIP for encryption.
WPA2, however, moved to the more secure AES-based encryption method. Contrary to option C, WPA2 does not enhance security by using TKIP; it uses CCMP/AES.
Therefore, option B correctly describes WPA2 as a certification program ensuring devices properly implement the more secure CCMP/AES encryption methods.
References:
* Wi-Fi Alliance website for WPA2 certification details.
* IEEE 802.11i-2004: Amendment for Enhanced Security.


NEW QUESTION # 94
What facts are true regarding controllers and APs in a Split MAC architecture?

Answer: D

Explanation:
The fact that is true regarding controllers and APs in a Split MAC architecture is that an IP tunnel is established between the AP and controller for AP management and control functions. A Split MAC architecture is a WLAN architecture where some of the MAC layer functions are performed by the APs (such as encryption, decryption, and frame acknowledgement) and some are performed by the controllers (such as authentication, association, roaming, and QoS). To communicate with each other, the APs and controllers establish an IP tunnel that carries the management and control frames between them. The IP tunnel can use protocols such as Lightweight Access Point Protocol (LWAPP) or Control And Provisioning of Wireless Access Points (CAPWAP).


NEW QUESTION # 95
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