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Express Learning: Data Communications and Computer Networks by ITL Education Solutions Limited

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11

Quality of Service and Protocols

1. What is meant by quality of service? What are its characteristics?

Ans: A stream of packets being transmitted from the source node to destination node is referred to as the flow. Each flow is characterized by a certain set of performance parameters such as reliability, jitter, delay and bandwidth. The ability of a network to deliver the flow of packets to the destination node with the defined set of performance parameters is defined as its quality of service (QoS). The characteristics that a flow seeks to attain are as follows:

images Reliability: This characteristic ensures that no packet is damaged or lost ...

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