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计算机只能识别0和1的组成的电子数据(digital data)。它不具备读取各种信息的能力，所以信息需要通过一定的规则翻译成数据。而对人来说，我们不具备读取电子数据的能力，所以在读取信息的时候，需要将数据转成人能理解的信息。对于一名网络工程师来说，需要更关注数据的端到端传递的过程。01.ISO...

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