N10-005 Question #381: Real Exam Question with Answer & Explanation

The correct answer is D: Clear line of sight. 802.11a operates in the 5GHz frequency band. At higher frequencies, radio signals have less ability to penetrate obstacles and suffer greater signal loss when obstructed. For outdoor point-to-point or point-to-multipoint wireless bridges using 802.11a, a clear line of sight betwe

Question

Which of the following is a requirement for bridging with 802.11a?

Options

AWPA encryption
BGovernmental licenses
CHigh gain yagi antennas
DClear line of sight

Explanation

802.11a operates in the 5GHz frequency band. At higher frequencies, radio signals have less ability to penetrate obstacles and suffer greater signal loss when obstructed. For outdoor point-to-point or point-to-multipoint wireless bridges using 802.11a, a clear line of sight between antennas is required to maintain a reliable, high-quality link. WPA encryption (A) is optional security, not a physical requirement. Governmental licenses (B) are not required for 802.11a, which uses unlicensed spectrum. High-gain Yagi antennas (C) may be used but are not universally required for all bridging scenarios.

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