Designing Cisco Enterprise Wireless Networks (ENWLSD) — Question 1

An engineer has performed a predictive site survey for high-speed data and voice in an indoor office. What is the recommended data rate with גˆ’67 dBm signal level for optimal VoWLAN design?

Answer options

• A. 6 Mbps on 802.11 bgn
• B. 24 Mbps on 802.11 bgn
• C. 12 Mbps on 802.11 an
• D. 24 Mbps on 802.11 an

Correct answer: C

Explanation

The recommended data rate of 12 Mbps on 802.11 an is optimal for VoWLAN at a -67 dBm signal level because it provides a balance between performance and reliability for voice traffic. The other options either provide lower data rates or are on 802.11 bgn, which does not support the necessary performance for good VoWLAN quality.