Computer Networking
If one link fails, only that link is affected. All other links remain active. Which topology does this?

Star topology
Physical topology
Mesh topology
Bus topology

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Computer Networking
How does a host on an Ethernet LAN know when to transmit after a collision has occurred?1. In a CSMA/CD collision domain, multiple stations can successfully transmit data simultaneously.2. In a CSMA/CD collision domain, stations must wait until the media is not in use before transmitting.3. You can improve the CSMA/CD network by adding more hubs.4. After a collision, the station that detected the collision has first priority to resend the lost data.5. After a collision, all stations run a random backoff algorithm. When the backoff delay period has expired, all stations have equal priority to transmit data.

1,3 and 4
2 and 5
1 and 3
2 and 4

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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
Network collisions occur
Repeaters cannot increase the signal strength sufficiently
Cable terminators do not reflect the signal properly

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