CWNA-106 Practice Test

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.

Beam width

B.

Range

C.

Active gain

D.

Receive sensitivity

E.

Fresnel Zone size

What statements about the beamwidth of an RF antenna are true? (Choose 2)

A.

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

B.

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

C.

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

D.

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

What HT technology requires MIMO support on both the transmitter and receiver?

A.

Spatial multiplexing

B.

Short guard intervals

C.

Maximal ratio combining

D.

Orthogonal Frequency Division Multiplexing

ABC Company has just purchased a 6 dBi patch antenna. After performing some tests with the 6
dBi antenna, they have concluded that more antenna gain is needed to cover their outdoor
courtyard. When choosing an antenna with higher gain, what other antenna characteristic will also
always change?

A.

Fresnel Zone size

B.

Maximum input power

C.

Beamwidth

D.

Impedance

E.

VSWR Ratio

AP-1 is a 3x3:2 AP. STA-3 is a 3x3:3 client. What is the maximum number of spatial streams that
can be used for a downlink HT-OFDM transmission from AP-1 to STA-3?

A.

One spatial stream, because the definition of the AP indicates that it is capable of only one
spatial stream.

B.

Three spatial streams, because the definition of the client indicates that it is capable of only
three spatial streams.

C.

Two spatial streams, because the definition of the AP indicates that it is capable of only two
spatial streams.

D.

Three spatial streams, because the definition of the AP indicates that it is capable of only three
spatial streams.