This a small corporate network installed in a building. It has three switches connected to the border router with built-in firewall capability to prevent intrusions from the Internet. Disregarding the connection between the firewall router and the Internet: a. How many LANs are there? b. How many subnetworks are there? c. If PC1 sends a message to the email server, is this inter-networking? d. If PC1 sends a message to the file server, is this inter-networking? e. What is the intermediary device used for intra-networking?

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A: answer for this is

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A: I have answer this question in step 2.

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A: The above question is solved in step 2 :-

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A: Here we have given solution for the multiple questions asked. You can find the solution in step 2.

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A: Here's the solution:

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A: The answer is

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A: TCP is not allowed for the assigned receiver buffer to overflow.

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A: Answer: We need to explain the when attacker send the data packer with and without ACK then what…