Certified Ethical Hacker (CEH v10) — Question 2

Which of the following antennas is commonly used in communications for a frequency band of 10 MHz to VHF and UHF?

Answer options

• A. Omnidirectional antenna
• B. Dipole antenna
• C. Yagi antenna
• D. Parabolic grid antenna

Correct answer: C

Explanation

The Yagi antenna is specifically designed for directional communication and is effective within the VHF and UHF frequency ranges, making it the correct choice. While omnidirectional and dipole antennas can operate at these frequencies, they do not offer the same directional gain and focus as the Yagi. The parabolic grid antenna is better suited for higher frequency ranges and satellite communications rather than the specified frequency band.