Designing for Cisco Internetwork Solutions (DESGN, legacy) — Question 2

Which Gigabit Ethernet media type provides the longest reach without a repeater?

Answer options

• A. 1000Base-CX
• B. 1000Base-LX
• C. 1000Base-SX
• D. 1000Base-T B

Correct answer:

Explanation

The correct answer is 1000Base-LX, which utilizes single-mode fiber and can reach up to 10 kilometers, making it suitable for long-distance connections without a repeater. In contrast, 1000Base-CX is limited to short distances, 1000Base-SX is designed for multimode fiber with shorter ranges, and 1000Base-T operates over copper cabling with a maximum reach of 100 meters.