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

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Computer Networking
Which of the following technique is used for fragment?

All of these
one of the pieces that results when an IP gateway divides an IP datagram into smaller pieces for transmission across a network that cannot handle the original datagram size
None of these
a technique used by protocols in which a lower level protocol accepts a message from a higher level protocol and places it in the data portion of the low level frame
a technique used in best-effort delivery systems to avoid endlessly looping packets

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