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The CWNA-108 exam is a rigorous test that requires candidates to have a good understanding of wireless networking technologies, protocols, and standards. CWNA-108 exam is made up of 60 multiple-choice questions that must be completed in 90 minutes. To pass the exam, candidates must achieve a score of at least 70%. CWNA-108 exam is available in multiple languages, including English, Spanish, German, and Japanese.
CWNP CWNA-108 certification is an excellent investment for IT professionals who want to advance their careers in wireless networking. CWNP Certified Wireless Network Administrator Exam certification provides a solid foundation for further professional development and specialization. Professionals who hold the CWNP CWNA-108 certification are in high demand by employers in the IT industry, and they can command higher salaries and better job opportunities.
NEW QUESTION # 40
ABC Company has just purchased a 6 dBi patch antenna. After performing some tests with the 6 dBi antenna, they have concluded that more antenna gain is needed to cover their outdoor courtyard. When choosing an antenna with higher gain, what other antenna characteristic will also always change?
- A. Maximum input power
- B. Fresnel Zone size
- C. Impedance
- D. VSWR Ratio
- E. Beamwidth
Answer: E
NEW QUESTION # 41
You were previously onsite at XYZ's facility to conduct a pre-deployment RF site survey. The WLAN has been deployed according to your recommendations and you are onsite again to perform a post-deployment validation survey.
When performing this type of post-deployment RF site survey for voice over Wi-Fi. what is an action that must be performed?
- A. Frequency-band hopping analysis to detect improper RF channel implementations
- B. Spectrum analysis to locate and identity RF Interference sources
- C. Application analysis with an active phone call on a VoWiFi handset
- D. Protocol analysis to discover channel use on neighboring APs
Answer: B
NEW QUESTION # 42
When replacing the antenna of a WLAN device with a similar antenna type that has a higher passive gain, what antenna characteristic will decrease?
- A. Receive sensitivity
- B. Active gain
- C. Range
- D. Beamwidth
Answer: D
NEW QUESTION # 43
In an 802.11n WLAN with a heterogeneous set of associated client devices including 802.11b,
11g, and 11n, what HT protection mode will the BSS use?
- A. Mode 0: No protection mode (Greenfield)
- B. Mode 3: Non-HT mixed mode
- C. Mode 1: Nonmember protection mode
- D. Mode 2: 20 MHz protection mode
Answer: B
NEW QUESTION # 44
What security option for 802.11 networks supports SAE and requires protected management frames?
* WPA
- A. WPA3
- B. OWE
- C. WPA2
Answer: B
Explanation:
Explanation
The security option for 802.11 networks that supports SAE and requires protected management frames is WPA3. WPA3 stands for Wi-Fi Protected Access version 3 and is the latest security standard for WLANs.
WPA3 supports two modes: WPA3-Personal and WPA3-Enterprise. WPA3-Personal uses Simultaneous Authentication of Equals (SAE) as the key exchange protocol, which provides stronger protection against offline dictionary attacks and password guessing than WPA2-Personal. WPA3 also requires protected management frames, which are encrypted frames that prevent spoofing, replay, or denial-of-service attacks on management frames such as deauthentication or disassociation frames. WPA, WPA2, and OWE do not support SAE or require protected management frames. References: [CWNP Certified Wireless Network Administrator Official Study Guide: Exam CWNA-107], page 307; [CWNA: Certified Wireless Network Administrator Official Study Guide: Exam CWNA-106], page 297.
NEW QUESTION # 45
You are planning for PoE in a standard office deployment. Which one of these devices is least likely to be a PoE PD?
- A. Access point
- B. Video camera
- C. Ethernet switch
- D. VoIP phone
Answer: B
NEW QUESTION # 46
What statement about the IEEE 802.11-2016 QoS facility is true?
- A. 802.11 QoS is achieved by giving high priority queues a statistical advantage at winning contention.
- B. When the Voice queue has frames awaiting transmission, no data will be transmitted from the Best Effort queue.
- C. Four 802.1p user priorities are mapped to eight 802.11 transmit queues.
- D. 802.11 control frames are assigned to the 802.11 EF priority queue.
Answer: A
NEW QUESTION # 47
What terms accurately complete the following sentence?
The IEEE 802.11-2012 standard specifies mandatory support of the ___________ cipher suite for Robust Security Network Associations, and optional use of the ___________ cipher suite, which is designed for use with pre-RSNA hardware.
- A. TLS, SSL
- B. 802.1X/EAP, WEP
- C. CCMP, TKIP
- D. RC5, RC4
Answer: C
NEW QUESTION # 48
What facts are true regarding controllers and APs in a Split MAC architecture?
- A. With 802.1X/EAP security, the AP acts as the supplicant and the controller acts as the authenticator.
- B. An IP tunnel is established between the AP and controller for AP management and control functions.
- C. Management and data frame types must be processed locally by the AP, while control frame types must be sent to the controller.
- D. Using centralized data forwarding, APs never tag Ethernet frames with VLAN identifiers or 802.1p CoS.
Answer: B
Explanation:
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). References: [CWNP Certified Wireless Network Administrator Official Study Guide: Exam CWNA-107], page 372; [CWNA: Certified Wireless Network Administrator Official Study Guide: Exam CWNA-106], page 362.
NEW QUESTION # 49
What security method is commonly used for VoIP handsets when the infrastructure does not support OKC or FT roaming?
- A. WPA2-Enterprise with EAP-TTLS
- B. WPA2-Enterprise with EAP-TLS
- C. WPA2-Enterprise with PEAP
- D. WPA2 -Personal
Answer: B
NEW QUESTION # 50
In an infrastructure Basic Service Set (BSS), how does the passive scanning process occur?
- A. Client stations broadcast Probe Request frames on all supported channels in the regulatory domain. Nearby access points respond with Probe Response frames. Client stations record information in the Probe Response frames for use in the association process.
- B. Access points broadcast Beacons on a single channel for which they are programmed. Nearby client stations listen for Beacon frames and record information found in the Beacons for use in the association process.
- C. Access points broadcast Beacons on all channels of each radio within the regulatory domain.
Nearby client stations record information found in the Beacons for use in the association process. - D. Client stations broadcast Probe Request frames on the single channel for which they are programmed. Nearby access points respond on that channel with Probe Response frames. Client stations record information found in the Probe Response frames for use in the association process.
Answer: B
NEW QUESTION # 51
You have been tasked with creating a wireless link between two buildings on a single campus. The link must support at least 150 Mbps data rates. What kind of WLAN technology role should you deploy?
- A. WPAN
- B. IBSS
- C. Wireless bridging
- D. Access BSS
Answer: C
Explanation:
Explanation
https://www.wlanmall.com/what-is-a-wireless-bridge/
Wireless bridging is a WLAN technology role that allows two or more networks to be connected wirelessly over a distance. A wireless bridge consists of two or more APs that are configured to operate in bridge mode and use directional antennas to establish a point-to-point or point-to-multipoint link. Wireless bridging can support high data rates and is suitable for scenarios where running cables is impractical or expensive. To create a wireless link between two buildings on a single campus that supports at least 150 Mbps data rates, wireless bridging is an appropriate solution678. References: CWNA-109 Study Guide, Chapter 6: Wireless LAN Devices and Topologies, page 271; CWNA-108 Study Guide, Chapter 6: Wireless LAN Devices and Topologies, page 265; Wi-Fi Wireless Bridging Explained.
NEW QUESTION # 52
You have received a report of poor wireless connections on the third floor of a building under your administration. Three individuals have reported the problem. Apparently, the connections are reporting a strong signal, but the users cannot access the Internet. With the problem identified, what is the next logical step in the troubleshooting process?
- A. Perform corrective actions
- B. Create a plan of action or escalate the problem
- C. Discover the scale of the problem
- D. Verify the solution
Answer: A
NEW QUESTION # 53
What can an impedance mismatch in the RF cables and connectors cause?
- A. Fewer MCS values in the MCS table
- B. Excessive VSWR
- C. Increased range of the RF signal
- D. Increased amplitude of the RF signal
Answer: B
Explanation:
Explanation
VSWR stands for Voltage Standing Wave Ratio, which is a measure of how well the impedance of the RF cable and connectors matches the impedance of the transmitter and the antenna. Impedance is the opposition to the flow of alternating current in an RF circuit, and it depends on the frequency, resistance, capacitance, and inductance of the components. A perfect impedance match would have a VSWR of 1:1, meaning that all the power is transferred from the transmitter to the antenna, and none is reflected back. However, in reality, there is always some degree of mismatch, which causes some power to be reflected back to the transmitter, creating standing waves along the cable. This reduces the efficiency and performance of the wireless system, and can also damage the transmitter. Excessive VSWR can be caused by using poor quality or damaged cables and connectors, or by using components that have different impedance ratings123. References: CWNA-109 Study Guide, Chapter 2: Radio Frequency Fundamentals, page 90; CWNA-108 Study Guide, Chapter 2: Radio Frequency Fundamentals, page 86; CWNP website, CWNA Certification.
NEW QUESTION # 54
What factors are likely to cause the greatest impact on the application layer throughput of an
802.11n client station in a 2.4 GHz HT BSS? (Choose 3)
- A. Increasing the beacon interval from 100 to 200 (TUs)
- B. RF interference from more than 10 nearby Bluetooth transmitters
- C. Use of passphrase authentication instead of 802.1X/EAP authentication
- D. Increasing or decreasing the number of spatial streams in use by the client station and AP
- E. Use of WEP or TKIP for encryption instead of CCMP
Answer: B,D,E
NEW QUESTION # 55
During a post-implementation survey, you have detected a non-802.11 wireless device transmitting in the area used by handheld 802.11g scanners. What is the most important factor in determining the impact of this non-802.11 device?
- A. Receive sensitivity
- B. Airtime utilization
- C. Channel occupied
- D. Protocols utilized
Answer: B
Explanation:
Airtime Utilization is a per-channel statistic that defines what percentage of the channel is currently being used, and what percentage is therefore free. Airtime usage can come from: Data traffic to and from client devices. Interference from WiFi and non-WiFi sources. Management overhead from APs and client devices. https://wyebot.com/2019/06/06/understanding-airtime-utilization/
NEW QUESTION # 56
An RF signal sometimes bends as it passes through some material other than free space. What is the term that describes this behavior?
- A. Warping
- B. Reflection
- C. Scattering
- D. Refraction
Answer: D
NEW QUESTION # 57
During a post-implementation survey, you have detected a non-802.11 wireless device transmitting in the area used by handheld 802.11g scanners. What is the most important factor in determining the impact of this non-802.11 device?
- A. Airtime utilization
- B. Receive sensitivity
- C. Channel occupied
- D. Protocols utilized
Answer: C
NEW QUESTION # 58
What factors does not influence the distance at which an RF signal can be effectively received?
- A. Transmitting station's output power
- B. Receiving station's output power
- C. Receiving station's radio sensitivity
- D. Free Space Path Loss
Answer: A
NEW QUESTION # 59
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. Evaluate the building materials at the facility and confirm that the floor plan documents are consistent with the actual building
- B. Install at least one AP on each side of the exterior walls to test for co-channel interference through these walls
- C. Collect information about the company's security requirements and the current configuration of their RADIUS and user database servers
- D. Test several antenna types connected to the intended APS for use in the eventual deployment
Answer: A
NEW QUESTION # 60
What is the most effective method for testing roaming in relation to 802.11 VoIP handsets?
- A. Use a spectrum analyzer to monitor RF activity during a VoIP call.
- B. Use the built-in roaming monitor built into all VoIP handsets.
- C. Place a call with the handset and move around the facility to test quality during roaming.
- D. Use a protocol analyzer to capture the traffic generated when a laptop roams.
Answer: C
NEW QUESTION # 61
You are installing AP to be used by 23 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. A 5 GHz channel, because channels 1 and 6 are 2.4 GHz channels they have no impact on the decision
- B. Channel 1, because it is best to use the channel with the lowest frequency
- C. Channel 11, because channels 1 and 6 are in use nearby
- D. Channel 6, because it is always best to use this channel
Answer: A
NEW QUESTION # 62
Which IEEE 802.11 physical layer (PHY) specifications include support for and compatibility with both ERP and HR/DSSS?
- A. DSSS (802.11-Prime)
- B. OFDM (802.11a)
- C. VHT (802.11ac)
- D. HT (802.11n)
Answer: D
NEW QUESTION # 63
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The CWNP CWNA-108 test is the basis of enterprise networking skills within the entire certification plan for CWNP. It provides the foundation needed to earn the other certificates specializing in analysis, design, and network expertise. In its complete form, the CWNA means Certified Wireless Network Administrator.
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