What action should be taken after implementing a WLAN based on the design developed from the site survey process?
A. Post-installation survey
B. Requirements analysis
C. Gathering facility documentation
D. Design the infrastructure services
Why does a frame transmitted at 1 Mbps have a greater usable range than the same frame transmitted at 54 Mbps?
A. Free space path loss causes greater signal dispersion for higher rate transmissions.
B. Receiver sensitivity requirements are lower for frames transmitted with less complex modulation and coding.
C. To improve reliability, 802.11 STAs increase transmit power as the signaling rate decreases.
D. Lower data rate RF transmissions travel at higher speeds and are less likely to experience collisions.
As an implementation engineer, you have just received initial design specs from a network designer for your dual-band 802.11n deployment. The network design documents prescribe the following data rate configuration for the 2.4 GHz radio:
Basic Rates 5.5, 6, 11, 12 Mbps
Supported Rates 9, 18, 24, 36, 48, and 54 Mbps as well as MCS 0-15
What will result from this design strategy?
A. By disabling support for 1 and 2 Mbps while allowing 5.5 and 11 Mbps, the network will force 802.11b clients to use these higher data rates.
B. Protection mechanisms will always be in use on this network to support 5.5 and 11 Mbps as basic rates.
C. HR/DSSS (802.11b) stations will not be able to associate to the service set.
D. This configuration violates the IEEE specification that defines 6, 12, and 24 Mbps as mandatory data rates for 802.11g/n.
HR/DSSS specifies the following PHY rates:
Response:
A. 6, 9, 12, 18, 24, 36, 48, 54
B. 1, 2
C. 1, 2, 5.5, 11
D. MCS 1?5
For what types of systems should you request read-only access to in order to perform an analysis of the customer's existing infrastructure?(Choose all that apply.)
Response:
A. Clients
B. RADIUS
C. Switches
D. Active Directory
E. Routers
After deploying a 5 GHz-only WLAN infrastructure in the USA, using 20 MHz channel- widths and all 25 available channels, one of the managers of the company brings his 802.11n tablet to the office to test the Guest SSID. While testing, therewere several spots where we would get poor RSSI (below -80dBM) or none at all. You checked the WLAN infrastructure and all APs are up and running and you've validated coverage after deployment. What is causing this issue?
A. His tablet doesn't support the 5 GHz band
B. His tablet only supports a 40 MHz channel-width
C. His tablet does not support one or more of the 5 GHz channels
D. His tablet doesn't support MU-MIMO
For what purpose is SSID hiding generally useful?(Choose all that apply.)
Response:
A. Preventing guests from attempting to join the secured corporate network
B. Obscuring the network name from potential attackers
C. Minimizing help desk calls from users and guests attempting to join the wrong network
D. Preventing legitimate corporate users from finding the guest network
You performed a site survey with two USB Wi-Fi adapters using a special driver written for the site survey software. After deployment, you realized that the client devices used by your customer are getting lower RSSI values than that shown during your site survey. What is the most likely reason for this result?
A. USB Wi-Fi adapters designed for site surveys may have better sensitivity than regular Wi-Fi cards installed in client devices.
B. The transmit power on the APs is higher than needed.
C. Regular Wi-Fi cards installed in client devices do not support the same protocols as survey adapters.
D. USB Wi-Fi adapters have a greater sensitivity than internal Wi-Fi adapters.
Given: The 802.11ac APs you have selected for your public access deployment support many of the PHY and MAC enhancements offered by the 802.11n and
802.11ac amendments. The AP is configured for a single-band (2.4 GHz) and only allows 20 MHz channels. The WLAN radio in the AP is a 3x3 802.11n chip that supports two spatial streams.
What is the maximum MCS rate that could be supported by this AP?
A. 54 Mbps
B. 65 Mbps
C. 108 Mbps
D. 144 Mbps
When designing a WLAN to support voice in a large office, which design element is of the highest concern for performance?
A. Frequency Selection
B. Roaming
C. AP vendor
D. Band steering
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