A network administrator is configuring a high-speed data link between two data centers, which requires a distance coverage of 10 km. Which of the following cable types would be the BEST choice for this configuration?
Category 6 (Cat 6)
Category 6a (Cat 6a)
Multimode Fiber (MMF)
Single Mode Fiber (SMF)
For long distances, especially those covering more than 2 km, Single Mode Fiber (SMF) is the appropriate choice because it allows light to travel down a very narrow core, which minimizes signal degradation and allows for data transmission over long distances without significant signal loss. Multimode Fiber (MMF) is generally suited for shorter distances due to modal dispersion, where multiple light paths cause the signal to spread and degrade over long hauls. Cat 6 and Cat 6a are types of copper cables which are typically limited to 100 meters in Ethernet applications; thus, they are unsuitable for a distance of 10 km.
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