Verified CWNA-108 exam dumps Q&As with Correct 178 Questions and Answers
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NEW QUESTION 91
In an infrastructure Basic Service Set (BSS), how does the passive scanning process occur?
- A. 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.
- B. 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.
- C. 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.
- D. 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.
Answer: C
NEW QUESTION 92
You are troubleshooting a client problem with a 2.4 GHz WLAN connection. The client is experiencing surprisingly low data rates during the work day. You analyze the workspace outside of business hours and detect a strong signal with a typical noise floor at the client location. During working hours, the user works with a laptop in the area and uses an external USB hard drive for continuous data access. The user also states that the laptop works as expected on her home network. The user working approximately 8 feet away from this client experiences no problems.
Based on this information, what is the likely cause of the problem?
- A. The drivers in the laptop are corrupt
- B. The AP is overloaded during the work day
- C. The laptop has a falling wireless adapter
- D. The external hard drive is USB 3.0 and is causing a significant increase in the noise floor when in use
Answer: B
NEW QUESTION 93
You are performing a post implementation validation survey. What basic tool can be used to easily locate areas of high co-channel interference?
- A. Laptop-based spectrum analyzer
- B. Access point spectrum analyzer
- C. Throughput tester
- D. Wi-Fi scanner
Answer: B
NEW QUESTION 94
You are troubleshooting a client problem with a 2.4 GHz WLAN connection. The client is experiencing surprisingly low data rates during the work day. You analyze the workspace outside of business hours and detect a strong signal with a typical noise floor at the client location. During working hours, the user works with a laptop in the area and uses an external USB hard drive for continuous data access. The user also states that the laptop works as expected on her home network. The user working approximately 8 feet away from this client experiences no problems.
Based on this information, what is the likely cause of the problem?
- A. The drivers in the laptop are corrupt
- B. The external hard drive is USB 3.0 and is causing a significant increase in the noise floor when in use
- C. The AP is overloaded during the work day
- D. The laptop has a failing wireless adapter
Answer: B
NEW QUESTION 95
You are implementing a VHT-capable AP. Which one of the following channels is available in the
802.11ac amendment to the 802.11-2012 standard, which was not available in the standard before this amendment?
- A. 0
- B. 1
- C. 2
- D. 3
- E. 4
Answer: A
NEW QUESTION 96
What term correctly completes the following sentence?
In an IEEE 802.11 frame, the IP packet is considered by the MAC layer to be a(n) _________.
- A. PLCP Protocol Data Unit (PPDU)
- B. PLCP Service Data Unit (PSDU)
- C. IP datagram
- D. MAC Service Data Unit (MSDU)
- E. MAC Protocol Data Unit (MPDU)
Answer: D
NEW QUESTION 97
What factor is likely to cause the least impact on the application layer throughput of an 802.11n client station in a 2.4 GHz HT BSS?
- A. RF interference from more than 10 nearby Bluetooth transmitters
- B. Implementation Fast BSS Transition (FT) for roaming
- C. Increasing or decreasing the number of spatial streams in use by the client station and AP
- D. Implementation of several other clients in the same BSS using 802.11g radios.
Answer: D
NEW QUESTION 98
What parameter of the client driver should be configured on a Windows computer to optimize moving from one AP to another within the ESS?
- A. Roaming threshold
- B. SSID selection
- C. ESSID selection
- D. Band preference
Answer: A
NEW QUESTION 99
To ease user complexity, your company has implemented a single SSID for all employees.
However, the network administrator needs a way to control the network resources that can be accessed by each employee based on their department.
What WLAN feature would allow the network administrator to accomplish this task?
- A. SNMP
- B. WPA2
- C. WIPS
- D. VRRP
- E. RBAC
- F. IPSec
Answer: E
NEW QUESTION 100
What features are most often configurable within 802.11 WLAN client utilities? (Choose 2)
- A. Roaming aggressiveness
- B. Co-channel interference threshold
- C. AES key and block size
- D. Power management
- E. Frame generator utility
Answer: A,D
NEW QUESTION 101
You are troubleshooting a problem with interference from a non-802.11 device. Given that the device is not a WLAN device, you cannot use a protocol analyzer and have chosen to use a spectrum analyzer. You want to view the signal from the interfering device over time to sec the activity that it is generating. What common spectrum analyzer view should you use for this analysis?
- A. APs
- B. Real-Time FFT
- C. Clients
- D. Waterfall/Spectrogram
Answer: D
NEW QUESTION 102
What statement about the IEEE 802.11e QoS facility is true?
- A. Four 802.1p user priorities are mapped to eight 802.11 transmit queues.
- B. 802.11 control frames are assigned to the 802.11 EF priority queue.
- C. When the Voice queue has frames awaiting transmission, no data will be transmitted from the Best Effort queue.
- D. 802.11 QoS is achieved by giving high priority queues a statistical advantage at winning contention.
Answer: D
NEW QUESTION 103
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 voice over Wi-Fi, what is an action that must be performed?
- A. Frequency-band hopping analysis to detect improper RF channel implementations.
- B. Protocol analysis to discover channel use on neighboring APs.
- C. Spectrum analysis to locate and identify RF interference sources.
- D. Application analysis with an active phone call on an VoWiFi handset.
Answer: D
NEW QUESTION 104
What statement about 802.3. Clause 33 Power over Ethernet is true?
- A. Only midspan PSEs are supported.
- B. Only endpoint PSEs are supported.
- C. When using CAT5 cabling, you increase the maximum draw available to the PD over that available with CAT6.
- D. The lowest voltage drop is achieved when using CAT6 cable instead of CAT5 or CAT5e.
Answer: C
NEW QUESTION 105
When an ACK frame is not received by the transmitting STA, what is assumed?
- A. The receiver is offline
- B. The frame was not delivered and must be retransmitted
- C. The receiver processed the frame, but did not respond with an ACK frame because 802.11w is enabled
- D. The frame was correctly delivered
Answer: B
NEW QUESTION 106
What is the final step in an effective troubleshooting process?
- A. Disable the WLAN
- B. Document the results
- C. Verify the solution
- D. Notify the users of problem resolution
Answer: B
NEW QUESTION 107
When using an RF splitter to connect one transceiver to sector antennas loss is incurred. What is this loss called?
- A. Active loss
- B. Intentional loss
- C. Conversion loss
- D. Through loss
Answer: D
NEW QUESTION 108
What answer correctly completes the following sentence?
____________ and physical carrier sense functions are used to determine if the wireless medium is busy.
- A. Backup
- B. Active
- C. Virtual
- D. Passive
Answer: C
NEW QUESTION 109
When a STA has authenticated to an AP (AP-1), but still maintains a connection with another AP (AP-2), what is the state of the STA on AP-1?
- A. Transitional
- B. Authenticated and Unassociated
- C. Unauthenticated and Unassociated
- D. Authenticated and Associated
Answer: A
NEW QUESTION 110
What non-standard WLAN solution attempts to give a longer transmission windows to devices with higher data rates then devise with lower data rates?
- A. RRM
- B. ARM
- C. AirTime Fairness
- D. Band Steering
Answer: C
NEW QUESTION 111
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