What effect does pulling too hard on a cable have?

Pulling too hard on a cable can indeed damage the cable. Cables are designed with a specific tensile strength, which is the maximum amount of stress they can withstand without suffering damage. Excessive pulling can lead to several issues, such as stretching, fraying, or even breaking the internal wires or fibers. This mechanical stress can compromise the integrity of the cable, leading to potential signal loss, connectivity issues, and ultimately, cable failure.

The other choices do not accurately reflect the physical properties and limitations of cables under stress. For instance, while improving performance or enhancing signal quality might seem desirable outcomes, they cannot occur if the cable is damaged due to excessive tension. Similarly, asserting that there would be no noticeable effect contradicts the well-understood consequences of physical stress on materials.