100-150 Question 113
Select 3A company is experiencing frequent disruptions in its network connectivity. The network uses copper Ethernet cables, and the affected office is located near a large industrial facility. After investigating, you suspect electromagnetic interference (EMI) as the cause. Which of the following solutions would help mitigate this issue?
- A
Replace the copper Ethernet cables with shielded twisted pair (STP) cables
- B
Switch to multimode fiber optic cables for the affected connections
- C
Install powerline networking adapters to bypass the interference
- D
Relocate the office network cables away from the industrial equipment
- E
Upgrade to 802.11 wireless connections operating on the 2.4 GHz band
Show answer and explanation
Correct answers: A, B, D
Explanation
Electromagnetic interference (EMI) can disrupt the performance of copper Ethernet cables, especially in environments with high electrical noise. Solutions such as using shielded twisted pair (STP) cables, switching to fiber optic cables, or physically relocating the cables away from the interference source effectively mitigate the issue. Wireless solutions on the 2.4 GHz band or powerline networking are not suitable as they are also prone to interference.
- A. Correct.
Shielded twisted pair (STP) cables are specifically designed to reduce electromagnetic interference by using shielding to protect the signal.
- B. Correct.
Fiber optic cables are immune to electromagnetic interference because they transmit data using light instead of electrical signals.
- C. Incorrect.
Powerline networking adapters would not resolve the issue as they are also susceptible to interference from electrical noise in the power lines.
- D. Correct.
Relocating the cables away from the source of interference can help reduce the impact of electromagnetic interference.
- E. Incorrect.
Wireless connections on the 2.4 GHz band are prone to interference from other devices and are unlikely to resolve issues caused by EMI from industrial equipment.