Here are the correct answers to your questions:
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An early form of the internet appeared in the **1940s, and the modern form of the internet began in the 1960s.
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The original purpose of the network that would become the internet was military and academic communication.
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The topology that has all computers, servers, and other devices connected to one cable is bus.
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A wireless network connects devices using radio waves or satellite signals.
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The topology that arranges devices in a circular pattern with single-direction data travel is ring.
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Before 1990, the technologies available to internet users mainly included file sharing.
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In the peer-to-peer model, each workstation is both a client and a server.
Let me know if you have any more questions!