Task to do: 1) Illustrate and explain congestion control by considering a simple queuing situation at a single packet switch or router. 2) Briefly explain Congestion Avoidance with explicit signaling and Congestion Recovery with implicit signaling methods in Frame Relay networks. 3) Internet routing protocols employ one of three approaches to gathering and using routing information: distance-vector routing, link-state routing, and path-vector routing. Briefly explain the functionality of all three. 4) Applications over IP networks required different type of QoS-based service. It is utmost important that these requirements are met to enable quality service. Discuss any FIVE types of applications and their respective QoS requirements