The thermal noise is at 174 dBm/Hz. A spectrum analyzer has a resolution bandwidth of 1 kHz and a 5 dB noise figure. What is the level of the noise floor?
Response:
A. 174 dBm
B. 139 dBm
C. 144 dBm
D. 204 dBm
When live video streaming solutions that transmit simultaneously to more than one recipient are used, what special capability should be considered and configured in all affected WLAN implementations?
A. IPSec
B. IPv6
C. Multicasting
D. Secure TCP
A bandpass filter has a maximum in-band loss of 1.5 dB, ripple of 0.4 dB, and a return loss of 15 dB. What is the minimum in-band loss? Response:
A. 1.1 dB
B. 1.5 dB
C. 13.5 dB
D. 1.9 dB
What is the chip rate of 1 Mbps 802.11b? Response:
A. 11 Mchips/s
B. 2 Mchips/s
C. 1 Mchip/s
D. 22 Mchips/s
When troubleshooting coverage issues for a wireless network as it appears to new client associations, you should perform which type of survey? Response:
A. Active survey
B. Passive survey
C. A survey is not necessary.
D. Predictive survey
If radar has reportedly been detected on your WLAN deployment, what bands would you consider avoiding? Response:
A. 5 GHz UNII-2 and 2e
B. 5 GHz UNII-2 and 3
C. 5 GHz UNII-2, 2e, and 3
D. 5 GHz UNII-1 and 2
E. 5 GHz UNII-1, 2, and 3
Given: As the wireless network administrator for XYZ Company, you are planning to upgrade your aging wireless network infrastructure, as well as some clients, to support 802.11ac.
In your research, you have discovered that your new wireless client devices and infrastructure are 802.11ac, WMM, and WMM-PS certified by the Wi-Fi Alliance. Some of your existing client devices are 802.11a/b/g devices that do not
support WMM.
Given this information, what scenario is possible when your company's employees begin using both types of client devices on the new WLAN?
Response:
A. All WMM-PS certified client devices will be prevented from utilizing WMM-PS features until all stations in use on the wireless medium are WMM-PS certified.
B. Performance and battery life will be inconsistent between WMM-PS and non-WMM-PS client devices when used with applications that support WMM-PS.
C. The WLAN infrastructure will set the dozing times of the WMM-PS certified client devices based upon their WMM access category, while the non-WMM-PS client devices will continue to use PSPoll frames.
D. WMM-PS enabled APs will allow both WMM-PS and non-WMM-PS stations to use the triggerand- delivery mechanism, but WMM-PS stations will g
During a post-deployment verification, you are requested to troubleshoot an area where users are experiencing poor throughput. They are using data communication only, mainly from laptops. You captured the frame showing an incorrect FCS. This frame is typical of those that were captured by the analyzer.
What does this frame reveal about the RF network in this area?
A. One station seems to be streaming video, thus may have reserved significant bandwidth via admission control
B. Contention Free is in place in this network, which may starve some non-QoS stations from access
C. Multipath or excessive collisions seem to be an issue in this area
D. The AP seems to be too far to provide enough coverage to this area
When viewing channel utilization information from a protocol analyzer, if high channel utilization is occurring, what should you ensure does not exist? Response:
A. A high percentage of low PHY rates
B. An RF signal generator causing an RF DoS
C. High levels of workload
D. High frames per second
Why should band steering algorithms allow stations to connect to the 2.4 GHz band after some number of ignored Probe Requests?
A. Because the FCC requires it.
B. Because some clients are persistent clients that will not move on to the 5 GHz band.
C. Because the 802.11 standard requires it.
D. Because the AP will experience a buffer overflow if they do not eventually respond with a Probe Response.
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