200-301 Question 69
Single answerA network engineer is tasked with connecting two buildings in a campus network that are 4 kilometers apart. The connection requires high-speed data transmission with minimal signal loss. Which type of cabling is most suitable for this scenario?
- A
Single-mode fiber
- B
Multimode fiber
- C
Copper twisted-pair
- D
Coaxial cable
Show answer and explanation
Correct answer: A
Explanation
Single-mode fiber is the most appropriate choice for long-distance, high-speed connections due to its ability to transmit signals over several kilometers with minimal loss. Multimode fiber and copper cables are not suitable for this scenario due to their distance limitations.
- A. Correct.
Single-mode fiber is ideal for long-distance communication (up to tens of kilometers) and offers minimal signal loss, making it the best choice for a 4-kilometer connection.
- B. Incorrect.
Multimode fiber is suitable for shorter distances (typically up to 500 meters) and would not perform well at 4 kilometers without significant signal degradation.
- C. Incorrect.
Copper twisted-pair cabling is typically used for short-distance connections (up to 100 meters) and is highly susceptible to signal loss over long distances like 4 kilometers.
- D. Incorrect.
Coaxial cable is not commonly used in modern high-speed data networks and is also not suited for long-distance connections like the one described.