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3. HR and director or general manager interview, we can call it leader interview; The code is as follows:There is no doubt that people in the IT industry are extremely smart. Even in other industries, their work also requires wisdom and creativity. In the IT industry, it needs extremely cutting-edge research and development work. Modern industry has evolved to the foundation of the business world that includes generating and supporting information flow.However, for Oppo, which is good at marketing,真正的青春涂鸦再次在这里上演——The adapter mode converts the interface of a class into another interface representation expected by the client, in order to eliminate the compatibility problem of the class caused by interface mismatch. It is mainly divided into three categories: class adapter mode, object adapter mode and interface adapter mode. First, let's look at the adapter pattern of the class. First, let's look at the class diagram:But this is not over yet. Ethernet also requires CRC verification when transmitting data. The network card will CRC check the data packet before sending the data, attaching a 4-byte CRC value to the back of the packet header. At this time, the packet length is no longer 40 bytes, but 64 bytes, which is often referred to as SYN packet attack. The packet structure is as follows: