CompTIA Network+ (N10-008) — Question 657

Which of the following standards would apply to a 10GB network link that is 1.86mi (3km)?

Answer options

• A. 10GBASE-TX
• B. 10GBASE-T
• C. 10GBASE-SR
• D. 10GBASE-LR

Correct answer: D

Explanation

10GBASE-LR is designed for long-range connections, supporting distances up to 10 kilometers over single-mode fiber, making it suitable for the specified distance. On the other hand, 10GBASE-TX and 10GBASE-T are intended for shorter distances over copper, while 10GBASE-SR is optimized for multimode fiber and typically covers shorter distances than 3 kilometers.