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You are tasked with designing the WLAN to accommodate certain high density areas on your university campus where users frequently come and

go. With a limited DHCP pool size (subnet mask = 255.255.252.0) for this WLAN subnet, you want to ensure that your DHCP addresses are used

efficiently and are not exhausted, which would prevent new client Layer 3 connections. The DHCP server is a Windows Server 2012 R2 machine.

Your design task is to determine the best configuration to allow as many users as possible while avoiding WLAN service interruptions and also to

use the available addresses as efficiently as possible.

What setting would be most effective at achieving this design task?

A.

Set the RTS threshold to 2346 bytes

B.

Set the inactive wireless client timeout (client age-out) to 5 minutes

C.

Set the maximum client limit per radio to 64

D.

Set the DHCP lease for this pool to 20 minutes

What single tool, by design can be used to verify channel selection, encryption in use and number of APs above a specified signal threshold in a given location during deployment?

A.

Spectrum analyzer

B.

Spreadsheet

C.

WLAN scanner

D.

Throughput tester

What statements are true regarding jitter and latency?(Choose all that apply.)

Response:

A.

Jitter is a measurement of latency variability from one frame to another.

B.

Jitter is a measurement of the variance of the number of frames received from an application for a specific time interval.

C.

Jitter is a measurement of average latency based on a sample of >100 frames.

D.

Latency is a measurement of the time delay experienced in the delivery of a frame.

E.

Latency is a measurement of the time required to transmit two subsequent frames.

For what purposes are VPNs typically used in modern WLANs?(Choose all that apply.)

Response:

A.

Remote AP tunneling to a corporate WLAN controller or VPN concentrator

B.

Client device connectivity to corporate resources from unsecured public networks

C.

Initial 802.11 authentication with the AP and subsequent data encryption

D.

Tunneling APs and WLAN controllers to cloud-based management platforms

E.

Tunneling APs and WLAN controllers to RADIUS and token servers

F.

Bridging client connectivity in ad hoc networks

What limitation exists when WMM is not enabled on an 802.11n WLAN?

A.

802.11 QoS will not be available

B.

The maximum channel-width will be 20MHz

C.

EDCA values will change

D.

Only two ACs will be available

You are selecting external antennas for use in a bridge link deployment. What chart should you request from the antenna vendors to make an

accurate selection?

A.

mW to dBm conversion chart

B.

dBm to dB conversion chart

C.

Elevation chart

D.

Antenna coating chart

During lunch time in the break room of a company, Wi-Fi connectivity on the 2.4 GHz band is intermittent. Every other time of the day, it works fine. What's the likely cause of this issue?

Response:

A.

Employees are using their cell data instead of using the Wi-Fi

B.

The AP in the cafeteria keeps rebooting due to lack of PoE budget on the switch

C.

Microwaves in the cafeteria are interfering with the Wi-Fi on the 2.4 GHz band

D.

Toasters and ovens are heating up the air, raising the noise floor with the Wi-Fi on the 2.4 Ghz band

You desire to achieve a 450 Mbps MCS. What 802.11n features (from the numbered list below) are required?

1. Frame aggregation

2. Short GI

3. 40 MHz channels

4. 2 spatial streams

5. 3 spatial streams

6. Transmit beamforming (TxBF)

A.

2, 3, 2

B.

1, 2, 3, 5

C.

1, 2, 3, 4, 6

D.

2, 3, 5

Which one of the following might be detected as a source of CCI during a post-validation survey in the 5 GHz band?

A.

Other OFDM networks

B.

Other ERP networks

C.

Microwave ovens

D.

Other HR/DSSS networks

What is a radome?

A.

A type of semi-circular ceiling found in atriums and that is a heavy cause of RF reflection.

B.

A weatherproof piece of plastic covering an antenna or antenna system.

C.

The unit used to measure the signal reflected backward by the end of a cable.

D.

A piece of metal positioned behind APs mounted on outdoor poles, designed to limit the butterfly effect.