Computer Networking
Which statement is true regarding classless routing protocols?1. The use of discontiguous networks is not allowed.2. The use of variable length subnet masks is permitted.3. RIPv1 is a classless routing protocol.4. IGRP supports classless routing within the same autonomous system.5. RIPv2 supports classless routing.

1, 3 and 5
None of these
3 and 4
2 and 5

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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.

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

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