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Certified Wireless Design Professional Questions and Answers

Question 25

A designer has created a WLAN design that has been implemented in an organization. The network exists in a four-story building. Because each floor has an identical floor plan, the designer designed only one floor and had the installers duplicate the design on each floor. Now, in validation, it is not performing well. What best explains the problem caused by this process?

Options:

The result was that APs were above and below each other on the same channel, resulting in excessive CCI. The APs should have been deployed so that they were not directly above and below each other and so that they used varying channels between floors

The result was that clients could only connect to APs on their floor and, in a multi-floor deployment, you want clients to connect to APs on other floors in case they roam between floors.

The result was that ACI was increased because the APs were deployed above and below each other on the same channels.

The result was that the frequency utilization was too low for the clients to capture RF waves on which to transmit their signals.

Question 26

When deploying long-distance 802.11 bridge links (10 miles / 16 km), what parameter may be critical for improving data flow by reducing retries caused by the long distances?

Options:

The sequence control field value

The acknowledgement timeout threshold

The minimum transmit data rate value

The CTS-to-self threshold

Question 27

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?

Options:

Verify that the shared secret between the authenticator and the RADIUS server is correct

Reboot the clients to empty the shared secret cache

Reboot the server to empty the shared secret cache

Restart the RADIUS service to empty the shared secret cache

Question 28

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?

Options:

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.

Protection mechanisms will always be in use on this network to support 5.5 and 11 Mbps as basic rates.

HR/DSSS (802.11b) stations will not be able to associate to the service set.

This configuration violates the IEEE specification that defines 6, 12, and 24 Mbps as mandatory data rates for 802.11g/n.

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Certified Wireless Design Professional Questions and Answers

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