CWNP CWNA-106 Dumps

HT

OFDM

HR/DSSS

ERP-PBCC

DSSS-OFDM

Diffraction

Reflection

Refraction

Diffusion

Scattering

MU-MIMO

Inverse square law

Path spread phenomenon

Fresnel zone thinning

Ohm’s law

With a spectrum analyzer, identify the type, amplitude, and location of RF interference sources, if any are present.

Evaluate the building materials at ABC’s facility and confirm that the floor plan documents are consistent with the actual building.

Test several antenna types connected to the intended APs for use in the eventual deployment.

Collect information about the company’s security requirements and the current configuration of their RADIUS and user database servers.

Install at least one AP on each side of the exterior walls to test for co-channel interference through these walls.

Verifying that a user is who he says he is

Validating client device credentials against a database

Logging the details of user network behavior in order to review it at a later time

Granting access to specific network services according to a user profile

Implementing a WIPS as a full-time monitoring solution to enforce policies

Transmitting station’s power source

Receiving station’s radio sensitivity

Free Space Path Loss

MAC layer encryption

Transmitting station’s output power

Temperature in the Fresnel zone

The lower the gain of an antenna, the more narrow one or both beamwidths become.

The beamwidth patterns on an antenna polar chart indicate the point at which the RF signal stops propagating.

Horizontal and vertical beamwidth are calculated at the points in which the main lobe decreases power by 3 dB.

Horizontal beamwidth is displayed (in degrees) on the antenna’s Azimuth Chart.

10 dBm

13 dBm

20 dBm

26 dBm

30 dBm

What data cabling is currently installed in the rooms and throughout the hotel?

How much RF loss do you expect between hotel rooms?

Who installed your existing wired network?

What types of applications will be used by the hotel staff?

On what frequency do the microwave ovens operate in the hotel suites?

HR/DSSS (802.11b)

OFDM (802.11a)

ERP (802.11g)

HT (802.11n)

CCK (802.11b)

VHT (802.11ac)

Real-time retry monitor

AP Signal strength meter

Spectrum analyzer utility

VLAN configuration

Link statistics display

A Voltage Standing Wave Ratio (VSWR) of 1:1

An impedance mismatch between components in the RF system

Cross-polarization of the RF signal as it passes through the RF system

The use of cables longer than one meter in the RF system

High output power at the transmitter and use of a low-gain antenna

Introduces “fast transition” roaming protocols for VoWiFi phones

Better link reliability between 802.11a/b/g client devices and 802.11ac APs

Improves service quality for real-time applications at greater distances

Increases in receive sensitivity enhance RTLS location accuracy

Stronger security with more robust encryption modes.

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

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

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

To improve efficiency, Block Acknowledgments are required for Voice and Video WMM queues.

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

802.11a and 11n use six (6) “pilot” subcarriers as a reference for the receiver to detect frequency and phase shifts of the signal.

802.11a/g/n OFDM includes several combinations of modulation and coding to achieve data rates from 1-600 Mbps.

With 802.11a OFDM, 16-QAM provides either 48 or 54 Mbps data rates, depending upon coding rates.

802.11ac VHT-OFDM utilizes 256-QAM, which increases the data rate significantly over 64-QAM available in HT-OFDM.

In 802.11a OFDM, fifty-six (56) subcarriers are used as parallel symbol transmission paths to carry data.

14 channels are available worldwide.

11 channels are available worldwide.

Regulatory domains worldwide require DFS and TPC in all these channels.

DFS may be required in some regulatory domains on some channels.

802.11 channels are separated by 5 Mhz

Use of larger frame sizes results in greater throughput in low interference environments.

BSS support for 65 KB A-MPDUs will increase the maximum data rate available to client devices.

In 802.11ac, changing the security mechanism from WPA2-Personal to WPA2-Enterprise will enable the VHT MCS rates.

Compared to an Independent BSS, an Infrastructure BSS can provide almost twice the throughput between wireless nodes.

Use of short guard intervals improves reliability and throughput in high multipath environments

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

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

A Fade Margin is unnecessary on a long-distance RF link if more than 80% of the first Fresnel zone is clear of obstructions.

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