CWS Antenna Theory & Types

Question 1

What is the standard unit used to express antenna gain relative to an isotropic radiator?

Accepted Answer

dBi

Answer

dBm

Answer

dBd

Answer

Watts

Question 2

Which antenna type radiates power equally in all horizontal directions, making it ideal for general indoor WLAN coverage?

Accepted Answer

Omnidirectional dipole antenna

Answer

Yagi-Uda antenna

Answer

Parabolic dish antenna

Answer

Patch panel antenna

Question 3

What does the acronym EIRP stand for in the context of wireless networking?

Accepted Answer

Effective Isotropic Radiated Power

Answer

Equivalent Interference Reduction Protocol

Answer

Extended Internal Radio Performance

Answer

Effective Integrated Radio Protocol

Question 4

What is the relationship between antenna gain and beamwidth?

Accepted Answer

Higher gain produces a narrower beamwidth

Answer

Higher gain produces a wider beamwidth

Answer

Gain and beamwidth are independent of each other

Answer

Lower gain always produces a narrower beamwidth

Question 5

Which antenna type is most appropriate for a long-distance point-to-point outdoor wireless bridge?

Accepted Answer

Parabolic dish antenna

Answer

Omnidirectional rubber duck antenna

Answer

Indoor ceiling-mount patch antenna

Answer

Whip antenna

Question 6

What is antenna diversity in a WLAN system?

Accepted Answer

Using multiple antennas and selecting the one receiving the strongest signal to improve reliability

Answer

Using antennas that operate on different frequency bands simultaneously

Answer

Deploying antennas manufactured by different vendors in the same network

Answer

Installing antennas on multiple floors of a building

Question 7

What polarization orientation do most indoor WLAN access point antennas use by default?

Accepted Answer

Vertical polarization

Answer

Horizontal polarization

Answer

Circular polarization

Answer

Cross polarization