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QoS lets a network prioritize certain types of traffic over others when bandwidth is limited, rather than treating all data equally.
Why Prioritization Matters
Real-time traffic like video calls is far more sensitive to delay than a background file download — QoS ensures the time-sensitive traffic gets priority when the network is under load.
How It's Typically Configured
Network administrators define rules tagging specific traffic types (by port, protocol, or application) with priority levels that routers and switches then respect.
