100-140 Question 80
Single answerA network technician is troubleshooting a wired connection in an office. They discover that the Ethernet cable used has poor shielding, which leads to signal interference from nearby electrical equipment. Which type of cable would be the most appropriate to reduce interference in this scenario?
- A
Unshielded Twisted Pair (UTP)
- B
Shielded Twisted Pair (STP)
- C
Coaxial Cable
- D
Fiber Optic Cable
Show answer and explanation
Correct answer: B
Explanation
The correct answer is Shielded Twisted Pair (STP). Unlike UTP, STP cables are designed with an additional shielding layer to reduce electromagnetic interference (EMI). This makes them ideal for environments with significant interference, such as areas near electrical equipment or machinery. While fiber optic cables are also immune to EMI, they are generally used for high-speed, long-distance communication rather than resolving minor interference in standard office setups.
- A. Incorrect.
Unshielded Twisted Pair (UTP) cables are cost-effective and commonly used but lack shielding, making them prone to signal interference in environments with high electromagnetic interference (EMI).
- B. Correct.
Shielded Twisted Pair (STP) cables include a shielding layer that protects against electromagnetic interference (EMI), making them suitable for environments with high interference, such as near electrical equipment.
- C. Incorrect.
Coaxial cables have a single conductor surrounded by shielding but are not typically used for standard Ethernet connections in modern office networks.
- D. Incorrect.
Fiber optic cables are immune to EMI but are more expensive and may be overkill for resolving basic interference issues in a wired Ethernet setup.