A multimeter can test a range of a cable's electrical properties while you are working with copper cabling (as opposed to fiber optic cabling).
In practically every respect, fiber optic cables outperform copper-based lines. To begin with, they outperform copper cables in terms of performance, or the maximum data rate they can support.
Television, phone, and digital data signals are transmitted using fibre optic cables by sending light waves through flexible glass and plastic threads that resemble human hair. Construction: Thousands of clear glass fiber strands with a thickness of a human hair make up a fibre optic cable.
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The given question is incomplete. The complete question is:
When you are working with copper cabling (as opposed to fiber optic), a _______ can check a variety of a cable's electrical characteristics.
A) loopback plug
B) protocol analyzer
C) toner probe
D) multimeter