A partial dependency exists.
We have two types of dependency. The partial dependency and the transitive dependency.
The answer here is partial dependency. It occurs when the attribute only depends on some parts of the element. In such attribute, the primary key is the determinant.
It can be shown as;
XY→WZ , X→W and XY is the primary key or the only candidate key
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The correct explanation of why Gary is wrong is that Ports are where connectors attach to destinations, not where data enter the network.
<h3>What is a port?</h3>
A port is physical part of the computer system where the external devices are connected using cables.
Therefore, it serves as an interface between the motherboard and an external device of the computer.
From Gary statement about ports, he is wrong because, Ports are where connectors attach to destinations, not where data enter the network.
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the answer should be the letter a