[2022] Pass CWNP CWNA-108 Exam Updated 178 Questions
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WLAN Devices and Protocols: 20%
The next section is all about the measurement of the following skills:
- Identify and describe the functions of three core 802.11 frame formats;
- Explain the functions and elements that structure the 802.11 wireless service site;
- Install and select WLAN devices, management, and control as well as explain their features.
- Describe the process that is utilized in locating and connecting to WLANs;
NEW QUESTION 65
You are implementing a multi-AP WLAN and fast secure roaming is essential. Which one of the following methods is an IEEE 802.11 standard method for fast roaming?
- A. OKC
- B. Load balancing
- C. Band steering
- D. FT
Answer: D
NEW QUESTION 66
What factor will have the most significant impact on the amount of wireless throughput available to each station within a BSS?
- A. The Layer 3 protocol used by each station to transmit data over the wireless link
- B. The power management settings in the access point beacons
- C. The presence of co-located (10m away) access points on non-overlapping channels
- D. The number of client stations associated to the BSS
Answer: D
NEW QUESTION 67
You are reporting on the RF environment in you facility. The manager asks you do describe the noise floor noted in the report. Which of the following is the best explanation?
- A. The energy radiated by flooring materials that causes interference in the 2.4 GHz and 5 GHz bands.
- B. The RF energy that exists in the environment from intentional and unintentional RF radiators that forms the baseline above which the intentional signal of your WLAN must exist.
- C. The noise caused elevators, microwave ovens, and video transmitters.
- D. The extra energy radiated by access points and clint devices beyond that intended for the signal.
Answer: B
NEW QUESTION 68
When implementing PoE, what role is played by a switch?
- A. Midspan injector
- B. Power splitter
- C. PO
- D. PSE
Answer: D
NEW QUESTION 69
You are using a tool that allows you to see signal strength for all Aps in the area with a visual representation. It shows you SSIDs available and the security settings for each SSID. It allows you to filter by frequency band to see only 2.4 GHz networks or only 5 GHz networks. No additional features are available.
What kind of application is described?
- A. Protocol analyzer
- B. Site survey utility
- C. Spectrum analyzer
- D. WLAN scanner tool
Answer: D
NEW QUESTION 70
You manage a WLAN with 100 802.1lac access points. All access points are configured to use 80 MHz channels. In a particular BSS, only 40 MHz communications are seen. What is the likely cause of this behavior?
- A. All clients implement single spatial stream radios
- B. The clients are all 802.11n STAs or lower
- C. The short guard interval is also enabled
- D. The AP is improperly configured to use only 40 MHz of the 80 MHz allocated bandwidth
Answer: D
NEW QUESTION 71
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. Channel occupied
- B. Airtime utilization
- C. Receive sensitivity
- D. Protocols utilized
Answer: B
NEW QUESTION 72
Which of the following frequency ranges are specified for use by IEEE 802.11 radios? (Choose all that apply.)
- A. 902 - 928 MHz
- B. 2.4000 - 2.4835 GHz
- C. 5.470 - 5.725 GHz
- D. 5.725 - 5.875 GHz
- E. 5.15 - 5.25 GHz
Answer: B,C,D,E
NEW QUESTION 73
XYZ Corporation is experiencing connectivity problems with their existing building-to-building bridge link. A concrete wall on the roof of one building is partially blocking the Fresnel Zone, and the connection is dropping many frames. The administrator moves the antenna to an area not obstructed by the concrete wall and then realizes the RF cable cannot reach the new location.
If an extension cable is added to move the antenna, what are the likely results?
- A. The data throughput rate will increase because VSWR will decrease.
- B. The likelihood of a direct lightning strike will increase.
- C. The Equivalent Isotropically Radiated Power (EIRP) will decrease.
- D. The size of the Fresnel zone will increase.
- E. The antenna's azimuth beamwidth will decrease.
Answer: C
NEW QUESTION 74
What statement describes the authorization component of a AAA implementation?
- A. Verifying that a user is who he says he is.
- B. Implementing a WIPS as a full-time monitoring solution to enforce policies.
- C. Granting access to specific network services or resources according to a user profile.
- D. Validating client device credentials against a database.
Answer: C
NEW QUESTION 75
You are onsite with a client to perform a post-deployment site survey. When verifying a multiple channel VoWiFi deployment using a VoWiFi handset, which aspect is most important?
- A. Performing protocol analysis with a single wireless adapter that is scanning all channels in use
- B. Verifying the VHT functionality to handle the call volume incurred by a single VoIP phone call.
- C. Configuring DSCP-to-802.11e QoS maps on the handset for each access category.
- D. Testing a constant conversation orhandset tone while roaming from area to area, or performing an active survey
Answer: D
NEW QUESTION 76
A company has hired you to perform a pre-deployment site survey of their facility. During an interview, the network manager informs you that the new wireless network must use 5 GHz bands and OFDM, and VoWiFi handsets will be used extensively over the wireless network.
What items do you need to include in the RF site survey report? (Choose 2)
- A. Results of OFDM versus ERP performance in each BSA
- B. Codec types and sampling rates for each VoWiFi phone
- C. Security parameters and configuration steps for VoWiFi handsets.
- D. Test results from an active survey with a VoWiFi handset
- E. A heat map demonstrating signal quality in areas where VoWiFi is supported.
Answer: D,E
NEW QUESTION 77
The network administrator at XYZ Company recently attended a training class on wireless security and realized that he should update the corporate security policy to address WLAN technology. The network administrator is listing the items that should be addressed in the security policy update, and has asked for your input.
What WLAN topics should be addressed by a company security policy? (Choose 3)
- A. User density planning and AP client association thresholds
- B. Theft prevention and data security of WLAN infrastructure devices
- C. Wired network performance analysis and baseline documentation
- D. Wireless intrusion monitoring and response procedures
- E. WLAN performance analysis baseline documentation
- F. Training of the IT staff on WLAN operational security
Answer: B,D,F
NEW QUESTION 78
What term correctly completes the following sentence?
802.11a/b/g used a mandatory 800ns guard interval. 802.11n introduced an optional short 400ns guard interval. Guard intervals (GI) are necessary in OFDM to reduce the likelihood of interference between two consecutive ____________.
- A. Segments
- B. Symbols
- C. Frames
- D. Bytes
- E. Bits
- F. Packets
Answer: B
NEW QUESTION 79
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. Weak signal strength
- B. Lack of support for 802.11n
- C. Too few spatial streams
- D. CAT5e cabling run to the AP
Answer: A
NEW QUESTION 80
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