CompTIA Network+ (N10-007) — Question 516

Which of the following WAN transmission mediums is the fastest and can travel the longest distance?

Answer options

• A. Satellite
• B. Copper
• C. Wireless
• D. Fiber

Correct answer: D

Explanation

Fiber is the fastest WAN transmission medium and can transmit data over long distances without significant signal loss. While satellite, copper, and wireless mediums have their own advantages, they cannot match the speed and distance capabilities of fiber optics.