Which design consideration does an administrator remember when preparing a proper network for wireless voice traffic?

Voice, video, and data traffic have different sensitivity to delay, jitter, and loss; handling them the same way would result in poor quality for real-time voice and video traffic.

For optimal wireless voice quality, Quality of Service (QoS) must be deployed comprehensively across the entire network path. This includes both the wired LAN infrastructure, from the IP phones to the access points and beyond, and the wireless WLAN segment, to ensure voice traffic receives appropriate prioritization, low latency, and minimal jitter throughout its journey. End-to-end QoS prevents performance degradation at any point in the network.

Deploying QoS only on the wireless WLAN is insufficient because voice traffic also traverses the wired LAN, where it can experience delays or drops if not properly prioritized, leading to poor call quality.

Using the default native VLAN for all wireless IP phones is a security risk and poor network design practice; voice traffic should be segregated into its own VLAN to isolate it and apply specific QoS policies.