QoS Fundamentals and Key Concepts refer to the basic principles and techniques used to manage and prioritize network traffic. Quality of Service helps ensure that critical applications such as voice, video, and business services receive sufficient bandwidth and priority. Key concepts include traffic classification, marking, queuing, shaping, policing, and congestion management. These techniques reduce latency, jitter, and packet loss in network communication. QoS also improves application performance and user experience during high traffic conditions. Network administrators use QoS to maintain stable, efficient, and reliable network operations across enterprise and service provider environments.
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