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Network Devices Created

Name and describe two of the network devices used to create a network. What is the purpose of a firewall?

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Network Repeater
A repeater connects two segments of the network cable. It retimes and regenerates the signals to suitable amplitudes and sends them to the other segments. The Ethernet topology using a center as a repeater. Repeaters need a small amount of time to regenerate the signal. This can cause a broadcast holdup which can affect the network communication when there are many repeaters in a row. Various network architectures limit the number of repeaters that can be used in a row. Repeater works only at the physical layer of the OSI network model.
Network Router
A router uses to route data packets among two networks. It reads the information in each of the packet to advise where it is going. If it is intended for an instant network it has access to, it will strip the external packet, readdress the packet to proper ethernet address, and then ...

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Network devices created is determined.