Computer Networking
Ethernet networks can be cabled in a number of topologies, depending on what works best in each environment. As more nodes are added, the efficiency of Ethernet decreases. Select the best answer as to why Ethernet becomes less efficient as size increases.

Cable terminators do not reflect the signal properly
"Line echo" occurs due to the impedance of the cable
Network collisions occur
Repeaters cannot increase the signal strength sufficiently
Cable terminators do not absorb the signal properly

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Computer Networking
Bulletin board system

None of these
is a public access message system
is a modem capable of accepting commands
converts digital signals to analog signals
converts analog signals to digital signals

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