Chapter 4 quiz

Question 1

When creating an outdoor bridge link, what is the recommended clearance for the first Fresnel zone?

Answer 1

80%

Question 2

You are creating a bridge link that spans 12 miles. You have inspected the area to identify trees and other interferers. What else should be considered?

Answer 2

Earth bulge

Question 3

You are selecting an antenna for a MIIMO AP that supports external antennas. You want to mount the antenna on the wall at the exterior of the target coverage area. What kind of antenna should you use?

Answer 3

Patch

Question 4

You are creating a very long distance bridge link in an area known for high winds. What kind of antenna would be useful for this scenario?

Answer 4

Grid

Question 5

What kind of lighting arrestor is best for direct lighting strikes?

Answer 5

No lighting arrestor protects against direct strikes

Question 6

At what signal loss level is the beamwidth of an antenna calculated?

Answer 6

3dB

Question 7

Why are Yagi and semi-directional SISO antennas less popular for indoor WLAN deployments today?

Answer 7

They do not provide the capacity needed in modern WLANs

Question 8

What receive technology was introduced in 802.11n and allows the receiver to combine multiple copies of the received signal from multiple antennas to increase received signal strength?

Answer 8

MRC

Question 9

What is another term often used for an Elevation chart?

Answer 9

Vertical chart

Question 10

Which antenna specification defines the highest gain antenna?

Answer 10

6 dBi