During a video conference, staff notice that their voices and screen-sharing freeze whenever a coworker uploads large files to the cloud. The administrator wants to configure the router so the voice and video packets get preferred treatment over bulk data traffic. Which network feature will provide this traffic prioritization?
VLAN
SSID
QoS
Firewall
Quality of Service (QoS) mechanisms classify packets-often by DSCP or 802.1p values-and allocate bandwidth or queue depth so that delay-sensitive traffic such as voice and video is forwarded ahead of best-effort data. VLANs merely separate broadcast domains, SSIDs identify wireless networks, and firewalls permit or deny traffic; none of those features automatically prioritize packets.
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