Computer Networking
A distributed data processing configuration in which all activities must pass through a centrally located computer is called a:

ring network
spider network
hierarchical network
data control network
None of these

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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.

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

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