CWNA-109 Prüfungsfragen Prüfungsvorbereitungen, CWNA-109 Fragen und Antworten, CWNP Wireless Network Administrator (CWNA)

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CWNP CWNA-109 Exam Overview:

Certification Vendor:	CWNP
Exam Name:	CWNA-109 Certified Wireless Network Administrator Exam
Exam Number:	CWNA-109
Exam Duration:	90 minutes
Real Exam Qty:	60-90
Exam Price:	USD 300 (approx.)
Passing Score:	70%
Available Languages:	English
Exam Format:	Multiple Choice, Multiple Response
Related Certifications:	CWDP CWAP CWSP CWNE
Certificate Validity Period:	3 years
Recommended Training:	CWNP Official CWNA Training CWNA Study Guide Resources
Exam Registration:	CWNP CWNA Certification Page Pearson VUE Registration
Sample Questions:	CWNP CWNA-109 Sample Questions
Exam Way:	Computer-based exam delivered via Pearson VUE testing centers or online proctored exam
Pre Condition:	No formal prerequisite required; basic networking knowledge recommended
Official Syllabus URL:	https://www.cwnp.com/certifications/cwna/

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CWNA-109 Studienmaterialien: CWNP Wireless Network Administrator (CWNA) & CWNA-109 Zertifizierungstraining

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CWNP CWNA-109 Prüfungsplan:

Thema	Einzelheiten
Thema 1	WLAN Regulations and Standards: The topic discusses the roles of WLAN and networking industry organizations. It also addresses the concepts of various Physical Layer (PHY) solutions, spread spectrum technologies, and 802.11 WLAN functional concepts.
Thema 2	WLAN Protocols and Devices: It focuses on terminology related to the 802.11 MAC and PHY, the purpose of the three main 802.11 frame types, MAC frame format, and 802.11 channel access methods.
Thema 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.

CWNP Wireless Network Administrator (CWNA) CWNA-109 Prüfungsfragen mit Lösungen (Q63-Q68):

63. Frage
What best describes WPA2 in relation to 802.11 wireless networks?

A. WPA2 is a certification created by the Wi-Fi Alliance that validates devices correctly implement CCMP/ AES.
B. WPA2 is the second version of WPA and it enhances security through the use of TKIP instead of WEP.
C. WPA2 is the standard that defines security for WLANs.
D. WPA2 is specified in the 802.11 standard as implementing CCMP/AES.

Antwort: A

Begründung:
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.

64. Frage
What cause of hidden nodes within a BSS would be more likely lead to an increase in collisions and retries?

A. Client stations broadcasting with too much power
B. Access points broadcasting with too little power
C. Large 802.11 cells with physically distributed stations
D. Data frames too large for the physical environment

Antwort: B

65. Frage
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?

A. Channel 6, because it is always best to use this channel
B. Channel 1, because it is best to use the channel with the lowest frequency
C. A 5 GHz channel, because channels 1 and 6 are 2.4 GHz channels they have no impact on the decision
D. Channel 11, because channels 1 and 6 are in use nearby

Antwort: C

Begründung:
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.

66. Frage
Your consulting firm has recently been hired to complete a site survey for a company desiring an indoor coverage WI-AN. Your engineers use predictive design software for the task, but the company insists on a pre-design site visit.
What task should be performed as part of the pre-design visit to prepare for a predictive design?

A. Install at least one AP on each side of the exterior walls to test for co-channel interference through these walls
B. Collect information about the company's security requirements and the current configuration of their RADIUS and user database servers
C. Test several antenna types connected to the intended APS for use in the eventual deployment
D. Evaluate the building materials at the facility and confirm that the floor plan documents are consistent with the actual building

Antwort: D

Begründung:
A pre-design site visit in preparation for a predictive wireless LAN design is essential for gathering physical and environmental data about the site. The key tasks to be performed during such a visit include:
Evaluating Building Materials: Different materials (concrete, glass, wood, etc.) have varying effects on RF signal propagation. Understanding the materials present helps in accurately predicting how signals will behave within the environment.
Floor Plan Verification: Ensuring that the floor plan documents are an accurate representation of the actual building layout is crucial. Discrepancies between the floor plans and the physical layout can lead to inaccuracies in the predictive design.
The other options, while potentially valuable in other contexts, are not directly related to preparing for a predictive design:
Installing APs (option A) for testing co-channel interference is more aligned with an active site survey rather than a pre-design visit for a predictive design. Collecting information about security requirements (option B) is important but is not directly related to the physical aspects of the site that would impact a predictive design. Testing antenna types (option C) would typically be part of an active site survey or the actual deployment phase, not a pre-design visit for predictive modeling. Therefore, option D is the correct answer, focusing on evaluating physical aspects crucial for accurate predictive modeling.

67. Frage
What factor does not influence the distance at which an RF signal can be effectively received?

A. Free Space Path Loss
B. Receiving station's radio sensitivity
C. Receiving station's output power
D. Transmitting station's output power

Antwort: C

Begründung:
In wireless communication, several factors influence the effective reception of RF signals, including the receiving station's radio sensitivity, the transmitting station's output power, and free space path loss. However, the receiving station's output power does not influence the distance at which an RF signal can be effectively received. The key factors that impact signal reception distance are:
Receiving Station's Radio Sensitivity: This refers to the lowest signal strength at which the receiver can process a signal with an acceptable error rate. Higher sensitivity allows for better reception at greater distances.
Transmitting Station's Output Power: This is the power with which a transmitter sends out a signal. Higher output power can extend the range of transmission, making it easier for distant receivers to detect the signal.
Free Space Path Loss (FSPL): FSPL represents the attenuation of radio energy as it travels through free space. It increases with distance and frequency, reducing the signal strength as the distance from the transmitter increases.
The output power of the receiving station is related to how strong a signal it sends out, not how well it can receive or process incoming signals. Therefore, it does not affect the reception distance of incoming RF signals.

68. Frage
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