The VPN helps to protect your online activity. They block government agencies from monitoring your activities on the internet. Certain VPNs charge an annual fee, while other offer trial versions for free and refunds. VPNs give free trials but offer limited options. The free trial offers an excellent way to test what kind of VPN is best for you. An

If the average rate of arrival exceeds a threshold called VC–CIR, a bidirectional VP is crowded. For calculating the threshold certain factors need to be taken into consideration: the SR of the queue, the round-trip time of a frame in the queue, and also the maximum duration of the sojourn allowed by the node. When congestion is present the