In other words, the job of IP is to get the raw data--the packet--from one place to another, the job of TCP is to manage the flow and ensure that the data is correct.

• 换名话说，IP的任务是，使未处理的数据（即报文分组）从一个地方传送到另一个地方；而tcp的任务则是，管理数据的流动，并保证数据的正确无误。