Which of the following allows for a beam of light to transmit data through a flexible cable?
正解:D
Single-mode fiber uses a beam of light to transmit data over long distances through a very thin, flexible cable. It is commonly used for high-speed data transmission across wide areas, such as between buildings or over long distances within a network. Single-mode fiber offers a higher bandwidth and longer distance capabilities compared to other types of fiber optics. D . Single-mode fiber: Transmits data using light through a fiber optic cable, making it ideal for long-distance communication. Why the other options are incorrect: A . Coaxial: Coaxial cables use electrical signals, not light, to transmit data. B . HDMI: HDMI (High-Definition Multimedia Interface) is used for transmitting audio and video signals but does not use light for data transmission. C . Thunderbolt: Thunderbolt cables transmit data using electrical signals and are typically used for high-speed data transfer and display connections. This falls under the Networking and Hardware domain in the CompTIA A+ Core 1 exam.