Which statement about fibre optic connections is true?

Which statement about fibre optic connections is true?

• A. Fibre is immune to eavesdropping
• B. Fibre is cheaper than copper in all cases
• C. Fibre cannot be used for long distances
• D. Fibre is wireless

Answer: (A)

The main idea here is that fibre optic cables offer security advantages because they carry signals as light inside a glass or plastic strand. Since the information travels as light within a sealed path, there’s no easy way to “tap” the signal without disturbing it. A copper wire radiates electrical signals that can be intercepted along the length, so fibre’s lack of easily detectable leakage makes eavesdropping far harder. In basic terms, fibre is considered immune to eavesdropping in everyday discussions because tapping it tends to be very difficult and noticeable. That’s why the statement about being immune is treated as true in this context. Of the other options, fibre isn’t always cheaper than copper—cost depends on installation, connectors, and maintenance. Fibre can be used over very long distances, with low attenuation and the use of amplifiers or repeaters, so the claim that it cannot be used for long distances isn’t correct. And fibre is not wireless; it’s a physical cable that carries light signals.

The main idea here is that fibre optic cables offer security advantages because they carry signals as light inside a glass or plastic strand. Since the information travels as light within a sealed path, there’s no easy way to “tap” the signal without disturbing it. A copper wire radiates electrical signals that can be intercepted along the length, so fibre’s lack of easily detectable leakage makes eavesdropping far harder. In basic terms, fibre is considered immune to eavesdropping in everyday discussions because tapping it tends to be very difficult and noticeable.

That’s why the statement about being immune is treated as true in this context. Of the other options, fibre isn’t always cheaper than copper—cost depends on installation, connectors, and maintenance. Fibre can be used over very long distances, with low attenuation and the use of amplifiers or repeaters, so the claim that it cannot be used for long distances isn’t correct. And fibre is not wireless; it’s a physical cable that carries light signals.