Fiber optic cables have 2 cores but not 4 cores
Multimode fiber optic cables can have multiple cores, commonly 2 or 4. Made from either high-quality glass or plastic, the core plays a critical role in determining the cable's performance. The number of optical cores in an optical fiber is the total number of equipment interfaces multiplied by 2, plus 10% to 20% of the spare quantity, and if the communication mode of the equipment has serial communication and equipment multiplexing, you can reduce the number of cores. This article will discuss about the differences between single-core, dual-core, and multi-core fiber optic cables. If the stack is stacked and the core switch is dual-machine hot standby redundancy, 6 cores are enough (2 cores each use 2 cores, and 2 cores are redundant).
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