Computer Networking
HMP (Host Monitoring Protocol) is:

a protocol that handles error and control messages
a TCP/IP high level protocol for transferring files from one machine to another.
a TCP/IP protocol used to dynamically bind a high level IP Address to a low-level physical hardware address
None of these
a protocol used to monitor computers

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

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Computer Networking
Contention is

the condition when two or more stations attempt to use the same channel at the same time
a collection of interconnected functional units that provides a data communications service among stations attached to the network
a continuous frequency capable of being modulated or impressed with a second signal
None of these
One or more conductors that serve as a common connection for a related group of devices

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