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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.Chapter 26First of all, let's look at Baidu's interview. So we can define a constructor first.《4minute的Travel Maker》由韩国QTV有线电视娱乐台播出的，展现了4minute繁忙日程之后通过旅行表现日常生活中面貌的偶像真人秀节目。4minute在节目中将前往釜山、新加坡等地旅行，传达20代年龄不做作的样子和作为女偶像组合的心情感受。此外从练习生时期一起同甘共苦的G.NA、演艺界至亲也是善意竞争对手的SISTAR等也会一起展开特别的旅行故事。幸运的是尹旭成功了，正是因此彻底断了他们的念想，让所有人都知道归降越国才是唯一的出路。他到底是对生死不在乎呢，还是对她有信心呢？见她发呆。MDT team members should have corresponding training opportunities to enhance their professional skills and cooperation ability in MDT team.