350-401 · Question #1179
What are two characteristics of a directional antenna? (Choose two.)
The correct answer is C. provides the most focused and narrow beam-width E. high gain. Directional antennas are characterized by their ability to focus RF energy into a narrow beam, which results in higher gain and a more concentrated signal.
Question
Options
- Acommonly used to cover large areas
- Blow gain
- Cprovides the most focused and narrow beam-width
- Dreceive signals equally from all directions
- Ehigh gain
How the community answered
(40 responses)- A3% (1)
- B8% (3)
- C88% (35)
- D3% (1)
Why each option
Directional antennas are characterized by their ability to focus RF energy into a narrow beam, which results in higher gain and a more concentrated signal.
Directional antennas are typically used for point-to-point links or specific area coverage, not for covering large, general areas that usually require omnidirectional antennas.
Directional antennas inherently have high gain due to their focused beam, not low gain.
Directional antennas are designed to concentrate their radiated power into a specific angular region, creating a highly focused and narrow beam-width for signal transmission and reception.
Receiving signals equally from all directions is a characteristic of an omnidirectional antenna, not a directional one.
By focusing RF energy in a specific direction, directional antennas achieve higher gain, meaning they can transmit and receive signals over longer distances or with greater signal strength in that targeted direction compared to omnidirectional antennas.
Concept tested: Directional antenna gain and beamwidth
Source: https://www.cisco.com/c/en/us/td/docs/wireless/controller/8-0/configuration-guide/b_cg80/b_cg80_chapter_01001.html
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