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Cisco 350, 350X and 550X Series Managed Switches, Firmware Release 2.4, ver 0.4 412
 
Quality of Service
The Quality of Service feature is applied throughout the network to ensure that network traffic 
is prioritized according to required criteria and the desired traffic receives preferential 
treatment.
This section covers the following topics:
• QoS Features and Components
• General
• QoS Basic Mode
• QoS Advanced Mode
• QoS Statistics