CWNA-106 Exam Dumps - Certified Wireless Network Administrator

Dipole

Patch

Dish

Grid

Sector

2.413 GHz

2.417 GHz

2.422 GHz

2.427 GHz

2.437 GHz

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

Military radar

Properly configured AP

Microwave oven

Wireless video camera

WIPS sensor

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.

To improve capacity in the BSS

To reduce the size of the AP’s effective service area

To prevent 802.11b devices from associating

To maximize the range of the highest data rates

To prevent VoWiFi multicast frames

To enable support for long preambles

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.

Channels 5 and 10

Channels 1 and 5

Channels 3 and 7

Channels 2 and 8

Channels 8 and 11

Channels 10 and 13