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CWNA-107
Certified Wireless Network Administrator Questions and Answers

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Questions # 1:

You recently purchased four laptops containing dual-band 802.11ac adapters. The laptops can connect to your 2.4 GHz network, but they cannot connect to the 5 GHz network. The laptops do not show the 5 GHz SSIDs, which are different than the 2.4 GHz SSIDs. Existing devices can connect to the 5 GHz SSIDs with no difficulty. What is the likely problem?

Options:

Interference from non-Wi-Fi sources

Faulty drivers

DoS attack

Interference from other WLANs

Answer

Questions # 2:

In a long-distance RF link, which statement about Fade Margin is true?

Options:

The Fade Margin is a measurement of signal loss through free space and is a function of frequency and distance.

The Fade Margin of a long-distance radio link should be equivalent to the receiver’s low noise filter gain.

A Fade Margin is unnecessary on a long-distance RF link if more than 80% of

Fade Margin is an additional pad of signal strength designed into the RF system to compensate for unpredictable signal fading.

Answer

Questions # 3:

What statement about 802.11 WLAN performance is true?

Options:

In modern networks, both centralized and distributed data forwarding work well for most standard office deployments

In most WLANs, no special skill or tuning is required to get peak performance

WLANs perform better as more wireless clients connect with each AP

To get the best performance out of an AP, you should disable data rates of 72 Mbps and lower

Answer

Questions # 4:

What terms accurately complete the following sentence?

The IEEE 802.11-2016 standard specifies mandatory support of the _______________ cipher suite for Robust Security Network Associations, and optional use of the ________________ cipher suite, which is designed for use with pre-RSNA hardware and is deprecated.

Options:

802.1X/EAP, WEP

CCMP, TKIP

TLS, SSL

RC5, RC4

Answer

Questions # 5:

You are reporting on the RF environment in you facility. The manager asks you do describe the noise floor noted in the report. Which of the following is the best explanation?

Options:

The energy radiated by flooring materials that causes interference in the 2.4 GHz and 5 GHz bands.

The noise caused by elevators, microwave ovens, and video transmitters.

The RF energy that exists in the environment from intentional and unintentional RF radiators that forms the baseline above which the Intentional signal of your WLAN must exist.

The extra energy radiated by access points and client devices beyond that intended for the signal.

Answer

Explanation

Reference http://blog.prosig.com/2008/04/14/what-is-db-noise-floor-dynamic-range/

Questions # 6:

The center frequency of channel 1 in the 2.4 GHz band is 2.412 GHz (2412 MHz). What is the center frequency of channel 4?

Options:

2.413

2.427

2.422

2.417

Answer

Questions # 7:

What common feature of MDM solutions can be used to protect enterprise data on mobile devices?

Options:

Over-the-air registration

Onboarding

Containerization

Self-registration

Answer

Questions # 8:

The BSA of an AP covers the area used by the sales and marketing department. Thirty-five stations operate in this space. The users 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?