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5.1 The syntax is as follows:少年接过那件背心，用手掂了掂，又摸了摸，仔细看着那细密的纹理，禁不住两眼放光，爹，你手艺真是太好了。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.On July 4 and 5, 2019, the summer has just begun. Although the practice has not yet begun, Mr. Sun Yimin, as the team's guiding teacher, still took pains to lead Captain Zhao Peiwei and Vice Captain Yuan Zhou. I went to Anhui Shenjian New Materials Co., Ltd. And Wuhu Tongquan Technology Co., Ltd. To have contact and communication with the leaders of the two companies in advance.上一季结尾，陈末向赵小雨深情告白没有得到回应，而为此小雨错过了暖男学霸苏舟的MP3表白。另一边，表白被拒的于贝贝和直击“车祸现场”的姚从良燃起了“友谊”的小火苗。第二季，经历了高二文理分班，陈末和他的一帮好友，努力学习可成绩依然上不去的赵小雨、品学兼优的苏舟、老气横秋的姚从良、古灵精怪的于贝贝，又幸运地重聚高二三班文科班。新学期，陈末苏舟从良帮助转校生牛德华融入班级，四人成为好兄弟；小雨贝贝和女班长钟洁不打不相识的成为好朋友；