CWNA-106 Practice Test

What factors are taken into account when calculating the Link Budget of a point-to-point outdoor
WLAN bridge link?

A.

Operating frequency

B.

Transmit antenna gain

C.

Transmit power

D.

Antenna height

A WLAN transmitter that emits a 200 mW signal is connected to a cable with 3 dB loss.
If the cable is connected to an antenna with 10 dBi gain, what is the EIRP at the antenna element?

A.

10 dBm

B.

13 dBm

C.

20 dBm

D.

26 dBm

E.

30 dBm

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

A.

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

B.

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

C.

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

D.

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

Which unit of measurement is an absolute unit that is used to quantify power levels on a linear
scale?

A.

dBm

B.

W

C.

dB

D.

mW

E.

VSWR

An 802.11 WLAN transmitter that emits a 50 mW signal is connected to a cable with 3 dB of loss.
The cable is connected to an antenna with 16 dBi of gain.
What is the EIRP power output?

A.

10 mW

B.

25 mW

C.

50 mW

D.

250 mW

E.

1000 mW