Designing Cisco Enterprise Wireless Networks (ENWLSD) — Question 125

A customer has a Wi-Fi network that is designed to support video over Wi-Fi. The Wi-Fi network has good coverage; however, video multicast traffic is unreliable. Video multicast traffic is reliable on the wired portion of the network. Which performance value indicates an issue with the Wi-Fi multicast traffic?

Answer options

• A. jitter
• B. packet error rate
• C. throughput
• D. latency

Correct answer: B

Explanation

The packet error rate is the correct answer because it measures the percentage of packets that are lost or corrupted during transmission, which directly affects the reliability of multicast traffic. Jitter, throughput, and latency are important metrics, but they do not specifically indicate issues with packet loss, which is critical for reliable multicast video streaming.