At one level, this means things such as synchronous and asynchronous communications, routing, transformation, high speed distribution of data, and gateways and protocol converters.
在一个层次上，这意味着数据的同步和异步通信、路由、转换和高速分布、以及网关和协议转换器等等。
2
Now let's see at a highlevel how a network packet is structured. Depending on the protocol being used for the communication, you could be dealing with one of the following IP packets.
现在我们从更高的层次看看网络包的结构是怎样的。
3
The CAN is a serial communications protocol which efficiently supports distributed real time control with a very highlevel of security.