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思科认证考试

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Why does the data communication industry use the layered OSI reference model (Choose two.)()。

  • A、It divides the network communication process into smaller and simpler components, thus aiding component development, design, and troubleshooting.
  • B、It enables equipment from different vendors to use the same electronic components, thus saving research and development funds.
  • C、It supports theevolution of multiple competing standards, and thus provides business opportunities for equipment manufacturers.
  • D、It encourages industry standardization by defining what functions occur at each layer of the model.
  • E、It provides a means by which changes in functionality in one layer require changes in other layers.
正确答案:A,D
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