Watch the following video

Watch the following video

Based on the video, answer the following questions. Provide reference.

•    If the packet is lost/broken/destroyed. What process ensures that it is resent?

•    What is the purpose of a proxy server?

•    In the video, firewall in the video was allowing port 80 and 25. What kind of data is allowed through this port? Provide 2 other ports and sort of data associated with it.

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