COMPTIA A+ Practice Exam

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Ace your COMPTIA A+ certification with our practice exam. Engage with a variety of questions including multiple choice and performance-based, complete with hints and detailed explanations. Prepare effectively and boost your confidence for the big day!

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What is SMF used for?

Transmitting LEDs
Transmitting lasers
Broadcasting television signals
Carrying electrical power

The correct answer is: Transmitting lasers

SMF stands for single mode fiber, which is a type of optical fiber that allows for the transmission of data using laser beams. Option A, transmitting LEDs, is incorrect because LEDs are used for lighting and not data transmission. Option C, broadcasting television signals, is incorrect because optical fiber is typically used for digital data transmission, not analog signals such as television. Option D, carrying electrical power, is incorrect because optical fibers are designed specifically for the transmission of optical signals, not electrical power.