Computer Networking
Which of the following types of channels moves data relatively slowly?

voiceband channel
broadband channel
narrowband channel
None of these
wideband channel

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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.

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

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Computer Networking
What is the purpose of flow control?

To regulate the size of each segment.
To provide a means for the receiver to govern the amount of data sent by the sender.
To ensure that data is retransmitted if an acknowledgment is not received.
To reassemble segments in the correct order at the destination device.

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