Answer to Question #273372 in Computer Networks for may

Question

DESCRIBE any TWO (2) QoS schemes in detail

Answer 1

1.Routing scheme- is the process of selecting a path for traffic in a network or between or across multiple networks. Broadly, routing is performed in many types of networks, including circuit-switched networks, such as the public switched telephone network (PSTN), and computer networks, such as the Internet.

In packet switching networks, routing is the higher-level decision making that directs network packets from their source toward their destination through intermediate network nodes by specific packet forwarding mechanisms. Packet forwarding is the transit of network packets from one network interface to another. 

2.Cross-layer QoS schemes are designed to provide different QoS guarantees to support different QoS requirements for different types of services. This scheme sets service priority values ​​according to service data arrival rates and required end-to-end delays in order to provide different services with different planning priorities. To better support QoS requirements and maintain fairness, this scheme introduces delay and throughput weighting factors. A method for calculating the coefficients has also been proposed.