NO.116 In a PC-based spectrum analyzer, what data chart identifies the overall RF utilization of a specific frequency in the environment being surveyed?

NO.117 While conducting a site survey in a heavy machinery repair facility, what essential gear should you use for safety in this challenging environment?

NO.118 What is the minimum PoE budget needed on a switch to support 6 (six) APs that can only be powered using IEEE 802.3at if no other details are provided?

NO.119 Name the audience type not addressed in this chapter for HLDs.
Response:

NO.120 You are working on a VoWLAN design with your customer’s wired networking team. How many distinct priority levels do you expect for the voice applications?

NO.121 Assume that your network operates in a regulatory domain that allows use of the entire 5 GHz space allowed in the 802.11ac amendment. In your upcoming 802.11ac deployment, you would like to take advantage of the performance improvements that result from channel bonding. However, after extensive testing, you have determined that your mission-critical WLAN should not use channels requiring DFS support.
Given those two criteria (enable channel bonding and disable DFS channels), in the 5 GHz spectrum, how many non-overlapping 40 MHz channels will your system be able to use?

NO.122 Which document provided to your customer should include all devices and parts that are going to be used during the deployment of their WLAN infrastructure?

NO.123 When deploying access points (APs) outdoors, which additional component needs to be used that is typically not required in most indoor office deployments?

NO.124 When deploying a new WLAN infrastructure using Power over Ethernet (PoE) to power the access points (APs), you find that a known good AP is not powering up. You connect your laptop using the same cable without any issues. What is the most likely reason the AP did not power up?

NO.125 What differences exist between VLANs in wireless and wired domains?

NO.126 During lunch time in the break room of a company, Wi-Fi connectivity on the 2.4 GHz band is intermittent. Every other time of the day, it works fine.
What’s the likely cause of this issue?

NO.127 You have initiated a site survey to be performed and the team has been onsite and is halfway through gathering the necessary data.
The project sponsor just asked you to make sure the WLAN supports radio frequency identification (RFID) location tracking. How would you possibly characterize this situation?
Response:

NO.128 Which DHCP option, when required, must be configured to help access points (APs) locate their wireless LAN controller (WLC) during deployment?

NO.129 An engineering firm upgraded from nine 802.11n APs to nine 802.11ac APs, retaining the same channel and power configuration. Despite this, throughput remains unchanged. What is the most likely reason for the lack of improvement?

NO.130 You are validating client association capabilities to an 802.1X/EAP secure SSID. The RADIUS server’s IP address is 10.100.50.25, and the default RADIUS authentication port is being used. None of the clients can associate with the SSID. After verifying that both the server and the RADIUS service are operational, you find that the authenticator (such as the AP or controller) is not communicating properly with the RADIUS server. What is your next troubleshooting step?

NO.131 When using a WLAN design tool with propagation modeling capabilities, what critical step must be performed before adding APs, antennas, and attenuation factors like walls?

NO.132 In this question, you will compare the mobility processes of a network that supports WPA2-Personal and WPA2-Enterprise. Assume the use of a
15-character
ASCII passphrase for WPA2-Personal and EAP-TTLS/MSCHAPv2 with WPA2-Enterprise. Also, assume that proprietary roaming protocols are not supported.
When a device transitions from one BSS to another within the same ESS, what step must be performed in the WPA2-Enterprise transition that are not performed in the WPA2-Personal transition?

NO.133 You are evaluating CCI (Co-Channel Interference) impact in 2.4 GHz. During the post-validation survey, you determine that 2 or 3 APs are seen from every location in the 2.4 GHz band with signal strengths above #75 dBm from all seen APs. Does this show that CCI has been removed from the environment given that three non-overlapping channels exist in 2.4 GHz and why?

NO.134 When surveying an existing WLAN infrastructure for a possible redesign, you use two Wi-Fi USB adapters to collect RSSI data and two USB spectrum analysis adapters to collect RF spectrum data. Since your laptop doesn’t have enough USB ports, you use a 4-port powered USB 3.0 hub. What issues could be caused by the use of USB 3.0 that will impact your site survey?

NO.135 An engineering firm just upgraded their WLAN from nine 802.11n APs to nine 802.11ac APs. After this upgrade, they did not see any improvement in throughput. What is the most likely cause of this result?