From the course: CompTIA Network+ (N10-009) Cert Prep

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Quality of service (QoS) and time to live (TTL)

Quality of service (QoS) and time to live (TTL)

From the course: CompTIA Network+ (N10-009) Cert Prep

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Quality of service (QoS) and time to live (TTL)

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- The next function we get to discuss is quality of service, otherwise known as QoS. QoS is a measurement of the level of service a network provides to its end users and the devices and the services used to achieve the desired quality of service level from the network. The objective of QoS is to set priorities for operation-critical applications and data. For example, applications for real-time voice or video communication really need high QoS levels. Other goals of QoS policies and technologies is to reduce the latency the packet actually has for it being transmitted on the network to increase network throughput. The basis of QoS is the network flow, which is measured by primarily certain metrics. Now, the metrics are going to be the network reliability, which means the network's error rate and data loss. Latency or delay measures the amount of time it takes for a packet to travel from one source to its destination. Jitter is going to be the change in that latency that occurs between…

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