Designing Cisco Enterprise Wireless Networks (ENWLSD) — Question 15

A wireless engineer is performing a post verification of a wireless network. Which two metrics does the engineer verify to ensure that the wireless network can support voice services? (Choose two.)

Answer options

• A. The coverage area must have a noise floor that does not exceed גˆ’87 dBm.
• B. The client device must have at least an גˆ’67 dBm RSSI.
• C. The rate of retransmitted packets must be 15 percent or below.
• D. The rate of retransmitted packets must be 20 percent or below.
• E. The client device must have at least an גˆ’65 dBm RSSI.

Correct answer: B, D

Explanation

The correct answers are B and D. An RSSI of at least -67 dBm is necessary for reliable voice communication, while ensuring that retransmissions are kept to 20 percent or below helps maintain call quality. The other options either specify incorrect RSSI thresholds or retransmission rates that are too low for acceptable performance.