Flexible packet types supports wide application range.
灵活的分组类型支持多种应用。
Is it someone who knows all the bits and bytes of every technology and all the packet types of each protocol?
专家是否必须了解每项技术的所有点滴以及每个协议的所有数据包？
These packets have headers, i.e. bits of data prefixed to every packet that contain information about the packet's source, destination, and protocol types.
这些信息包有头，即在每个包前面所附带的一些数据位，它们包含有关信息包的源、目的地和协议类型的信息。
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