Which of the following cables provides maximum security against electronic eavesdropping on a network?

Question

Options

• AFibre optic cable
• BSTP cable
• CUTP cable
• DNTP cable

• A
  88% (42)
• B
  2% (1)
• C
  4% (2)
• D
  6% (3)

Explanation

Fibre optic cable transmits data as pulses of light rather than electrical signals, making it immune to electromagnetic interception - there is no electrical field to tap into. Any physical attempt to splice or bend the cable to intercept light disrupts the signal, making the intrusion detectable.

Why the distractors are wrong:

• B. STP (Shielded Twisted Pair): The shielding reduces electromagnetic interference but does not prevent eavesdropping - the electrical signal can still be intercepted with the right equipment.
• C. UTP (Unshielded Twisted Pair): The most common and least secure copper cable; it has no shielding whatsoever, making it the easiest to eavesdrop on.
• D. NTP cable: NTP stands for Network Time Protocol - it is a protocol, not a cable type. This is a nonsense distractor.

Memory tip: Think "light = no leak." Light doesn't radiate outside the cable the way electrical signals do, so fibre optic = maximum physical and electronic security.

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