对初学者来说，我们可以简单地理解为TCP协议是用来检测数据传输中的差错并进行流量控制的协议。TCP协议如果发现问题，就要发出重新传输的信号，直到所有数据能够安全传输到目的地，因此它起到一个信息传输过程中的控制作用。IP协议的最主要作用就是给网络中的每一台电脑分配一个唯一地址，否则别的电脑就找不到它。这就像我们日常活生中寄信要有地址，打电话要有电话号码一样。现在人们将Internet中使用的所有协议统称为TCP/IP协议。

-For starters, we can simply be understood as TCP protocol is used to detect errors in data transmission and flow control protocol. TCP protocol If problems are found, it is necessary to signal retransmitted until all data can be securely transmitted to the destination, so it acts as an information transmission process control action. The main role of the IP protocol is to give each computer in the network is assigned a unique address, otherwise the other computer can not find it. It' s like we live in everyday must send a letter address to have the same phone number to call. The Internet is now used in all protocols collectively referred to as TCP/IP protocol.