If a link serves 1000 cells/s, a packet is made of 100 cells, and has a packet loss rate of 10-3, and each loss recovery takes 2 s, what is the effective throughput of the link

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In windows explorer, select the file, folder, or groups of files and folders you'd like to copy. you can select multiple files or folders in several ways: click the first file or folder you want to select, hold down the ctrl key, and then click each additional file or folder you want.