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Question # 4

You are managing a wireless access point in autonomous mode using the Web based interface. You capture traffic during this management task and notice that you can see the HTML code of the Web pages for access point management. What error in administration could be the cause of the security concern?

A.

A VPN with the AP is not established

B.

WPA2 is disabled on the WLAN

C.

HTTP is in use instead of HTTPS

D.

IPsec is not in use of the management connection as recommended

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Question # 5

You are deploying a WLAN with the access points configured for 10 mW of output power on the 2.4 GHz radios and 20mW of output power on the 5GHz radios. Some semi-directional antennas are also in use. What kind of deployment is described?

A.

High density

B.

SOHO

C.

Standard office

D.

Residential

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Question # 6

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 that the 2.4 GHz SSIDs. Existing devices can connect to the 5 GHz SSIDs with no difficulty. What is the likely problem?

A.

Interference from no-Wi-Fi sources

B.

Faulty drivers

C.

DoS attack

D.

Interference from other WLANs

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Question # 7

What security solution is deprecated in the 802.11 standard and should never be used in any modern WLAN deployment?

A.

AES

B.

Shared Key Authentication

C.

CCMP

D.

Open System Authentication

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Question # 8

You support a WLAN using dual-band 802.11ac three stream access points. All access points have both the 2.4 GHz and 5 GHz radios enabled and use 40 MHz channels in 5 GHz and 20 MHz channels in 2.4 GHz. A manager is concerned about the fact that each access point is connected using a 1 Gbps Ethernet link. He is concerned that the Ethernet link will not be able to handle the load from the wireless radios. What do you tell him?

A.

His concern is valid and the company should upgrade all Ethernet links to 10 Gbps immediately.

B.

His concern is valid and the company should immediately plan to run a second 1 Gbps Ethernet link to each AP.

C.

His concern is invalid because the AP will compress all data before transmitting it onto the Ethernet link.

D.

Due to 802.11 network operations and the dynamic rates used by devices on the network, the two radios will likely not exceed the 1 Gpbs Ethernet link.

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Question # 9

An RF sigma sometimes bends as it passes through some material other than free space. What is the term that describes this behavior?

A.

Reflection

B.

Refraction

C.

Scattering

D.

Warping

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Question # 10

As an RF wave propagates through space, the wave front experiences natural expansion that reduces its signal strength in an area. What term describes the rate at which this expansion happens?

A.

Inverse square law

B.

Ohm’s law

C.

Fresnel zone thinning

D.

MU-MIMO

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Question # 11

In a mesh BSS (MBSS), according to the 802.11-2016 standard, what device connects the mesh to an Ethernet network?

A.

Mesh Gate

B.

Mesh Switch

C.

Mesh Router

D.

Mesh Portal

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Question # 12

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?

A.

Use a 160 MHz channel on the 5 GHz radio

B.

Use a 40 MHz channel on the 5 GHz radio

C.

Install a second AP in the coverage area

D.

Use a 40 MHz channel on the 2.4 GHz radio

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Question # 13

When replacing the antenna of a WLAN device with a similar antenna type that has a higher passive gain, what antenna characteristic will decrease?

A.

Range

B.

Beam width

C.

Active gain

D.

Receive sensitivity

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Question # 14

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?

A.

2.413

B.

2.427

C.

2.422

D.

2.417

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Question # 15

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

A.

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

B.

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

C.

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.

D.

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

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Question # 16

You are evaluating a connection that states the data rate is 150 Mbps. What is the expected throughput of this connection?

A.

Less than 150 Mbps because of 802.11 overhead and contention

B.

54 Mbps because that is the actual maximum throughput of an 802.11 connection

C.

More than 150 Mbps because of compression

D.

150 Mbps because the data rate is equal to the throughput

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Question # 17

You are installing AP to be used by 23 laptops. All laptops will connect on the 5 GHz frequency band. A neighbor network uses channels 1 and 6. What channel should be used for this AP and why?

A.

Channel 6, because it is always best to use this channel

B.

A 5 GHz channel, because channels 1 and 6 are 2.4 GHz channels they have no impact on the decision

C.

Channel 1, because it is best to use the channel with the lowest frequency

D.

Channel 11, because channels 1 and 6 are in use nearby

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Question # 18

In which plane of the three networking planes is an access point configured by a WLAN controller?

A.

Control

B.

Management

C.

Security

D.

Data

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Question # 19

Which one of the following is not a factor considered when calculating the Link Budget for an outdoor point-to-point WLAN bridge link?

A.

MU-MIMO capabilities of the bridges

B.

Receive antenna gain

C.

Transmit power

D.

Operating frequency

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Question # 20

What non-standard WLAN solution attempts to give a longer transmission windows to devices with higher data rates than devices with lower data rates?

A.

AirTime Faimess

B.

Band Steering

C.

ARM

D.

RRM

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Question # 21

What ID is typically mapped to an AP’s MAC address if a single BSS is implemented?

A.

VLAN ID

B.

BSSID

C.

Device ID

D.

SSID

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Question # 22

When performing a validation survey for a Multiple Channel Architecture (MCA) system in a multi-tenant building with five floors, what aspect should you, as the surveyor, keep in mind?

A.

The RF interference caused by passing airplanes supporting on-board Wi-Fi should be a prime consideration

B.

The channel reuse pattern should be three dimensional with the RF cell extending coverage of each access point to other floors

C.

The omni-directional antennas of the access points should be oriented parallel to the floor to maximize the coverage pattern across as many floors as possible

D.

The Fresnel Zone is completely blocked between floors so each floor is considered a separate site survey

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Question # 23

What statement about the IEEE 802.11-2016 QoS facility is true?

A.

802.11 QoS is achieved by giving high priority queues a statistical advantage at winning contention.

B.

Four 802.1p user priorities are mapped to eight 802.11 transmit queues.

C.

802.11 control frames are assigned to the 802.11 EF priority queue.

D.

When the Voice queue has frames awaiting transmission, no data will be transmitted from the Best Effort queue.

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