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Pass CWNA Certification CWNA-108 Exam With 178 Questions
WLAN Troubleshooting: 10%
In the last domain, your following skills will be tested:
- Explain and use basic troubleshooting tools utilized within WLANs;
- Establish and troubleshoot basic wireless problems.
CWNA-108 exam is necessary to obtain the CWNP Certified Wireless Network Administrator certification. It focuses on helping the candidates understand how wireless technology fundamentals work and how to manage WLAN architecture.
Job Posts and Salary
The achievement of the CWNA certificate is what separates you from others within the IT field. This certification is what you need to prove the kind of skills you currently have as well as your capability in operating complex enterprise wireless networks. Job posts that you will be fitting after obtaining such a designation include a network administrator and systems administrator. As stipulated by ZipRecruiter.com, the current salary of CWNA certified specialists is almost $52k yearly.
NEW QUESTION 60
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. Wireless bridging
- B. WPAN
- C. IBSS
- D. Access BSS
Answer: C
NEW QUESTION 61
When compared with legacy Power Save mode, how does VHT TXOP power save improve battery life for devices on a WLAN?
- A. VHT TXOP power save allows stations to enter sleep mode and legacy Power Save does not.
- B. VHT TXOP power save uses the partial AID in the preamble to allow clients to identify frames targeted for them.
- C. Legacy Power Save mode was removed in the 802.11ac amendment.
- D. VHT TXOP power save allows the WLAN transceiver to disable more components when in a low power state.
Answer: B
NEW QUESTION 62
The IEEE 802.11-2016 standard requires VHT capable devices to be backward compatible with devices using which other 802.11 physical layer specification (PHY)?
- A. ERP-PBCC
- B. HR/DSSS
- C. DSSS
- D. OFDM
Answer: D
NEW QUESTION 63
What phrase defines Equivalent Isotropically Radiated Power (EIRP)?
- A. Power supplied from the transmission line to the antenna input
- B. The power output from the radio after cable losses
- C. The highest RF signal strength that is transmitted from a given antenna
- D. The power output from the radio into the RF cable
Answer: C
NEW QUESTION 64
What statement accurately describes the RF cables and connectors that are used in an
802.11 WLAN system?
- A. 75 and 125 ohms are the typical impedances of 802.11 WLAN connectors.
- B. Some RF connectorsdo not cause insertion loss.
- C. Large diameter RF cables cause greater loss than small diameter cables.
- D. Two RF connectors of the same type (e.g. SMA), manufactured by different companies, may vary in specifications.
Answer: D
NEW QUESTION 65
In a mesh BSS (MBSS), according to the 802.11-2016 standard, what device connect the mesh to an Ethernet network?
- A. Mesh Router
- B. Mesh Portal
- C. Mesh Switch
- D. Mesh Gate
Answer: D
NEW QUESTION 66
Prior to association, what parameter can 802.11 client devices measure and use to select the optimal access point for association?
- A. Average round trip time to reach the Internet DNS server
- B. Average round trip time to reach the IP router
- C. Signal strength of access point beacons received
- D. Proximity to potential access points
- E. Retry rate of probe request and response frames
Answer: C
NEW QUESTION 67
You are tasked with performing a throughput test on the WLAN. The manager asks that you use open source tools to reduce costs. What open source tool is designed to perform a throughput test?
- A. Python
- B. PuTTy
- C. iPerf
- D. IxChariot
Answer: C
NEW QUESTION 68
The center frequency of channel 1 in the 2.4 GHz band is 2.412 GHz (2412 MHz). What is the center frequency of channel 4?
- A. 2.413
- B. 2.422
- C. 2.427
- D. 2.417
Answer: C
NEW QUESTION 69
In a Wi-Fi client configuration utility, what feature is most likely to be user configurable?
- A. RADIUS Server IP Address
- B. SNMPv3 Users
- C. 802.1p to WMM mappings
- D. EAP Authentication Type
- E. WMM-PS Dozing Interval
Answer: D
NEW QUESTION 70
A natural disaster has occurred in a remote area that is approximately 40 miles from the response team headquarters. The response team must setup a local wireless network using 802.11 WLAN access points. What is the best method, of those listed, for implementation of network backhaul for communications across the Internet in this scenario?
- A. Temporary wired DSL
- B. Temporary wired cable
- C. 802.11 bridging
- D. Cellular/LTE
Answer: D
NEW QUESTION 71
A client complains of low data rates on his computer. When you evaluate the situation, you see that the signal strength is -84 dBm and the noise floor is -96 dBm. The client is an 802.11ac client and connects to an 802.11acAP. Both the client and AP are 2x2:2 devices.
What is the likely cause of the low data rate issue?
- A. CAT5e cabling run to the AP
- B. Weak signal strength
- C. Lack of support for 802.11n
- D. Too few spatial streams
Answer: B
NEW QUESTION 72
What fact is true regarding controllers and Aps in a split-MAC architecture?
- A. An IP tunnel is established between the AP and controller for AP management and control functions
- B. Using centralized data forwarding, frames leaving the Aps are never tagged Ethernet frames with VLAN identifiers
- C. With 802.1X/EAP security, the AP acts as the supplicant and the controller acts as the authenticator
- D. Management and data frames must be processed locally by the AP, while control frames are sent to the controller
Answer: A
NEW QUESTION 73
What best describes WPA2 in relation to 802.11 wireless network?
- A. WPA2 is specified in the 802. 11 standard as implementing 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 a certification created by the Wi-Fi Alliance that validates device correctly implement CCMP/AES.
- D. WPA2 is the standard that defines security for WLANs.
Answer: D
NEW QUESTION 74
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. Protocols utilized
- C. Channel occupied
- D. Receive sensitivity
Answer: A
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 75
What statements about the beamwidth of an RF antenna are true?
- A. When antenna gain is lower, the beamwidth is also lower in both the horizontal and vertical dimensions.
- B. Vertical beamwidth is displayed (in degree) on the antenna's Azimuth chart.
- C. Horizontal and vertical beamwidth are calculated at the points in which the main lobe decreases power by 3 dB
- D. The beamwidth patterns on an antenna polar chart indicate the point at which the RF signal stops propagating.
Answer: C
NEW QUESTION 76
Three access points are used within a facility. One access point is on channel 11 and the other two are on channel 1. The two access points using channel 1 are on either side of the access point using channel 11 and sufficiently apart so that they do not interfere each other when they transmit frames. Assuming no other Aps are in the vicinity, is CCI still a possibility in this network and why?
- A. Yes, because the client devices connected to one of the channel 1 APs will transmit frames that reach the other channel 1 AP as well as
- B. No, because the Aps are far enough apart that no CCI will occur
- C. Yes, because channel 11 loops around and causes CCI with channel 1
- D. No, because CCI only occurs in the 5 GHz frequency band
Answer: A
NEW QUESTION 77
What factors will have the most significant impact on the amount of wireless bandwidth available to each station within a BSS?
- A. The number of client stations associated to the BSS
- B. The layer 3 protocol used by each station to transmit data over the wireless link
- C. The presence of co-located (10m away) access points on non-overlapping channels
- D. The power management settings in the access point's beacons
Answer: A
NEW QUESTION 78
What statement about the SSID is true?
- A. The SSID is a security session identifier used in RSNs.
- B. The SSID is a pseudo-random number assigned to each client by an AP.
- C. The SSID must be included in an association request frame.
- D. The SSID is an alphanumeric value assigned to devicemanufacturers by the IEEE.
Answer: C
NEW QUESTION 79
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. Beamwidth
- B. Active gain
- C. Range
- D. Receive sensitivity
Answer: A
NEW QUESTION 80
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