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TCP works in the Transport layer, IP in the Network layer, and ARP in the DataLink layer; The data on the second layer is called Frame, the data on the third layer is called Packet, and the data on the fourth layer is called Segment. At the same time, we need to simply know that when data is sent from the application layer, header information will be added to each layer, encapsulated, and then sent to the data receiving end. This basic process you need to know, that is, every data will go through the process of data encapsulation and unencapsulation.失踪八年的刘子光（陈伟霆 饰）突然出现在故乡江北市，丧失记忆的他却发现自己有了异于常人的体魄和能力。在一次营救被劫儿童的事件中，被女警胡蓉（马思纯 饰）当成嫌疑人物盯上。如果知道这么繁重的工作会让人讨厌的话，就绝对不会成为警察！For example, if the value of the master-down-after-milliseconds option is 30,000 milliseconds (30 seconds), then as long as the server can一群劫匪占领朝鲜半岛统一印钞局。由于人质被困其中，警方必须阻止他们，以及这一切的幕后黑手。众人听着纷纷点头，尉缭到底厉害，各方面的分析丝丝入扣，考虑的很是周到。