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(3) Purposeful exercises include feedbackBroadcastingTherefore, verification code can only be used as an auxiliary means, not as the main solution.If a TCP connection is established between A and server B, then C forges an RST packet and sends it to B, causing B to abnormally disconnect the TCP connection with A, which is an RST attack. How should C forge RST packets?She said that she could stay in the mountains for a few years without going out, just to do it well. It would be even better if the craft could be revived and passed on. After living in the city for many years, she has returned to her hometown, lived in seclusion in the mountains, and returned to the original ecological rural life. If it weren't for her heartfelt love, many people would not have been able to do this. This is also the biggest touch to us.Residents! Without health, how can we talk about happiness? Without life, how can we talk about construction? Without descendants, how can we talk about development? !Whenever the network fails, many people subconsciously think it is the cause of switches, routers and other equipment, but the reality is often caused by some humble accessories, such as network cables. No matter whether the project starts to be implemented or the later troubleshooting, belittling the network cable will often cause us to pay an unexpected price.