Refer to the passage below and then answer the question afterwards in the same language as the passage: Passage: A network or protocol that supports QoS may agree on a traffic contract with the application software and reserve capacity in the network nodes, for example during a session establishment phase. During the session it may monitor the achieved level of performance, for example the data rate and delay, and dynamically control scheduling priorities in the network nodes. It may release the reserved capacity during a tear down phase. Mubvunzo: Ko QoS inotaurirana kuti basa remambure richaita sei?
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