CompTIA Network+ (N10-007) — Question 431

A network administrator needs to extend an organization's network to a nearby building that has unused SMF already installed. The network administrator has decided to create a switch-to-switch uplink. Which of the following standards would be the BEST to use?

Answer options

• A. 10BASE-T
• B. 100BASE-T
• C. 1000BASE-LX
• D. 1000BASE-SX

Correct answer: C

Explanation

The correct answer is C, 1000BASE-LX, as it is designed for long-distance connections over single-mode fiber (SMF), making it ideal for the uplink to the nearby building. Options A and B, 10BASE-T and 100BASE-T, are for twisted pair copper and not suitable for SMF, while D, 1000BASE-SX, is optimized for multi-mode fiber and not the best choice for longer distances typical of SMF installations.