CCNP Wireless FAQ: Selecting Antenna Systems
Q1. When comparing light energy to wireless energy, a light bulb can be compared to what antenna element?
Q2. The orientation of an antenna’s E-field determines what characteristic of the antenna’s operation?
Q3. Relative to each other, the E-field of a vertically polarized antenna and the E-field of a horizontally polarized antenna are what?
Q4. Omnidirectional antennas are available with either vertical or horizontal polarization. True or false?
Q5. A diversity receiving system can automatically select the best signal from one of two antennas. True or false?
Q6. When using a diversity system, the two antennas must always be the same type and point in the same direction. True or false?
Q7. Anyone who deploys an outdoor license-free wireless system can provide reliable wireless service. True or false?
Q8. A strong signal arriving at your receiver from another wireless network increases your network throughput. True or false?
Q9. How much is the typical cross-polarization isolation between a horizontally polarized and a vertically polarized antenna?
Figure: Vertical Polarization
Figure: Horizontal Polarization
Q10. A sectorized antenna system does not allow you to serve more end users. True or false?
Q11. In a sectorized antenna system, all the sector antennas should be identical. True or false?
Q12. Sector antennas in a sectorized antenna system should always be mounted perfectly vertical. True or false?