Implementing and Operating Cisco Enterprise Network Core Technologies (ENCOR) — Question 562

Which signal strength and noise values meet the minimum SNR for voice networks?

Answer options

• A. signal strength -66 dBm, noise 90 dBm
• B. signal strength -67 dBm, noise 91 dBm
• C. signal strength -68 dBm, noise 89 dBm
• D. signal strength -69 dBm, noise 94 dBm

Correct answer: D

Explanation

The correct answer is D because it provides the best Signal-to-Noise Ratio (SNR) with a signal strength of -69 dBm and noise of 94 dBm, meeting the minimum requirement for voice networks. Options A, B, and C have weaker signal strengths or higher noise levels, resulting in lower SNRs that do not meet the necessary threshold for optimal voice communication.