Designing Cisco Enterprise Wireless Networks (ENWLSD) — Question 52

A network engineer is working on a predictive WLAN design. The new wireless network must support access to Internet, email, voice, and the inventory database.
To successfully support these services, which configuration must the engineer use for the signal strength levels and SNR on the planning tool?

Answer options

• A. signal strength of -67 dBm, 20-dB SNR, and maximum 5 percent packet loss
• B. signal strength of -70 dBm, 30-dB SNR, and maximum 10 percent packet loss
• C. signal strength of 67 dBm, 20-dB SNR, and maximum 1 percent packet loss
• D. signal strength of -67 dBm, 25-dB SNR, and maximum 1 percent packet loss

Correct answer: D

Explanation

Option D is the correct choice because it specifies a signal strength of -67 dBm and a 25-dB SNR, which provides a sufficient quality for voice and real-time services, keeping packet loss to a minimum at 1 percent. Option A has a lower SNR, which may not support the required services effectively, while Option B has a weaker signal strength and higher packet loss, which can lead to service interruptions. Option C incorrectly lists a positive signal strength, which is not valid in this context.