100-150 Question 105
Single answerA network technician is tasked with setting up a high-speed connection between two buildings on a corporate campus. The connection must span 500 meters and avoid interference from nearby electrical equipment. Which cable and connector types should the technician use to meet these requirements?
- A
Twisted pair cable with RJ-45 connectors
- B
Copper coaxial cable with BNC connectors
- C
Fiber optic cable with LC connectors
- D
Twisted pair cable with RJ-11 connectors
Show answer and explanation
Correct answer: C
Explanation
In this scenario, the connection must span 500 meters and avoid interference from nearby electrical equipment. Fiber optic cables with LC connectors are the best choice because they support high-speed data transmission over long distances and are immune to electromagnetic interference. Copper-based solutions, such as twisted pair or coaxial cables, are either limited by distance or prone to interference, making them unsuitable for this requirement.
- A. Incorrect.
Twisted pair cables, such as Cat5e or Cat6, are commonly used for Ethernet connections but are limited to a maximum distance of 100 meters and are susceptible to electromagnetic interference (EMI). This does not meet the 500-meter requirement.
- B. Incorrect.
Copper coaxial cables can handle longer distances than twisted pair, but they are still susceptible to EMI and are not ideal for high-speed connections over 500 meters.
- C. Correct.
Fiber optic cables are the best choice for high-speed connections over long distances (up to kilometers, depending on the type) and are immune to EMI. LC connectors are common in fiber optic installations, making this the most suitable option.
- D. Incorrect.
RJ-11 connectors are used for telephone lines and are not designed for high-speed network connections or long distances. This option is unsuitable for the scenario.