220-801 · Question #294
Which of the following cable types has extra shielding built into the cable to guard against EMI?
The correct answer is C. STP. STP (Shielded Twisted Pair) has a metallic foil or braided shield wrapped around the twisted wire pairs, providing protection against electromagnetic interference (EMI). UTP (A) is Unshielded Twisted Pair and has no such shielding. Multimode (B) and Single-mode (D) are fiber…
Question
Which of the following cable types has extra shielding built into the cable to guard against EMI?
Options
- AUTP
- BMultimode
- CSTP
- DSingle-mode
How the community answered
(52 responses)- A2% (1)
- B4% (2)
- C88% (46)
- D6% (3)
Explanation
STP (Shielded Twisted Pair) has a metallic foil or braided shield wrapped around the twisted wire pairs, providing protection against electromagnetic interference (EMI). UTP (A) is Unshielded Twisted Pair and has no such shielding. Multimode (B) and Single-mode (D) are fiber optic cable types that are immune to EMI by nature but are not described as having 'extra shielding' - they simply don't conduct electricity.
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