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. Spectrum analysis to locate and identify RF interference sources.
B. Frequency-band hopping analysis to detect improper RF channel implementations.
C. Application analysis with an active phone call on an VoWiFi handset.
D. Protocol analysis to discover channel use on neighboring APs.
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 a protocol analyzer to capture the traffic generated when a laptop roams.
C. Place a call with the handset and move around the facility to test quality during roaming.
D. Use the built-in roaming monitor built into all VoIP handsets.
A string of characters and digits is entered into an AP and a client STA for WPA2 security. The string is 8 characters long. What is this string called?
A. MSK
B. WEP key
C. Passphrase
D. PSK
A client STA must choose the best AP for connectivity. As part of the evaluation, it must verify compatible data rates. What can the client STA use to verify that an AP supports the same data rates that it supports?
A. Beacon frames transmitted by the AP
B. Data frames sent between the AP and current clients STAs
C. Authentication frames transmitted by the other client STAs
D. Probe request frames transmitted by other client STAs
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 a network backhaul for communications across the Internet in this scenario?
A. Temporary wired cable
B. 802.11 bridging
C. Cellular/LTE
D. Temporary wired DSL
The BSA of an AP covers the area used by the sales and marketing department. Thirty-five stations operate in this space. The user indicate that they need more throughput and all stations are 5 GHz capable 802.11ac clients. The current AP configuration uses 20 MHz channels in both 2.4 GHz and 5 GHz. What is the least expensive solution available for increasing throughput for these users without implementing configuration options that are not recommended?
A. Use a 160 MHz channel on the 5 GHz radio
B. Use a 40 MHz channel on the 5 GHz radio
C. Install a second AP in the coverage area
D. Use a 40 MHz channel on the 2.4 GHz radio.
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. No, because CCI only occurs in the 5 GHz frequency band
D. Yes, because channel 11 loops around and causes CCI with channel 1
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. AirTime Fairness
B. Band Steering
C. ARM
D. RRM
You are planning for PoE in a standard office deployment. Which one of these devices is least likely to be a PoE PD?
A. Video camera
B. Access point
C. VoIP phone
D. Ethernet switch
You are implementing a VHT-capable AP. Which one of the following channels is available in the 802.11- 2016 standard that was not available before the ratification of 802.11 ac?
A. 153
B. 161
C. 144
D. 56
