CWT CWT Antenna Systems & Site Surveys

Question 1

What is the primary purpose of conducting a wireless site survey before deploying a WLAN?

Accepted Answer

To identify RF coverage, interference, and optimal AP placement

Answer

To purchase the correct number of access points

Answer

To configure SSID names before installation

Answer

To register the network with the FCC

Question 2

Which antenna type radiates power equally in all horizontal directions, making it ideal for open-area deployments?

Accepted Answer

Omnidirectional antenna

Answer

Yagi directional antenna

Answer

Parabolic dish antenna

Answer

Sector antenna

Question 3

What unit is used to measure antenna gain relative to an isotropic radiator?

Accepted Answer

dBi

Answer

dBm

Answer

dBd

Answer

MHz

Question 4

What does VSWR (Voltage Standing Wave Ratio) indicate in an antenna system?

Accepted Answer

The amount of RF power reflected due to impedance mismatch

Answer

The frequency range of the antenna

Answer

The polarization of the antenna

Answer

The antenna's operating temperature range

Question 5

Which passive site survey method involves walking a facility with a device to record signal strength without any traffic generation?

Accepted Answer

Passive survey

Answer

Active survey

Answer

Predictive survey

Answer

Spectrum analysis

Question 6

What is antenna polarization and why does it matter for wireless links?

Accepted Answer

The orientation of the electric field emitted by the antenna, which must match on both ends

Answer

The color coding of antenna cables

Answer

The number of frequencies an antenna supports

Answer

The mounting angle of the antenna on a pole