CWS CWS Site Survey & Network Planning 2

Question 1

Which frequency band provides the longest range but lowest throughput in typical WLAN deployments?

Accepted Answer

2.4 GHz

Answer

The 2.4 GHz band propagates farther due to its lower frequency but offers lower throughput and more interference than 5 GHz.

Question 2

What is the purpose of an active site survey compared to a passive one?

Accepted Answer

It transmits test traffic to measure throughput, latency, and packet loss

Answer

An active site survey transmits actual data packets to test real-world throughput, latency, and packet loss under load.

Question 3

What is the significance of the Fresnel zone in wireless network planning?

Accepted Answer

It is the elliptical area around the line of sight that should be kept clear for optimal signal propagation

Answer

Obstructions within the Fresnel zone cause signal diffraction and attenuation, so keeping at least 60% clear is critical for optimal links.

Question 4

When planning AP placement to achieve -67 dBm or better throughout an office, a specialist should consider which factor first?

Accepted Answer

Physical obstructions and building materials

Answer

Building materials like concrete, metal, and glass cause significant RF attenuation that directly affects coverage planning.

Question 5

What is the typical channel width used for 802.11ac (Wi-Fi 5) deployments to maximize throughput?

Accepted Answer

80 MHz

Answer

80 MHz channels are the standard for 802.11ac deployments, balancing high throughput with reasonable interference management.

(CWS) Certified Wireless Specialist Practice Test