Computer Networking
TCP is:

Connectionless and unreliable
Operates at the Data Link layer
Connection orientated and unreliable
None of these
Connection orientated and reliable

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Computer Networking
Bus is

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

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