Computer Networking
Contention is

None of these
the condition when two or more stations attempt to use the same channel at the same time
One or more conductors that serve as a common connection for a related group of devices
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

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Computer Networking
What is a stub network?

A network that has only one entry and exit point.
A network with only one entry and no exit point.
A network with more than one exit and entry point.
A network with more than one exit point.

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