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Memory, which can be divided into two types: one is called random, which is responsible for temporarily storing data waiting for CPU processing, and the data will be lost after power failure. It has no memory function. If the CPU is compared to the carriage of a train, RAM is the platform, and the people who go up and down the train are the data waiting to be processed and can only stay on the platform temporarily. The other is called read-only device, which can only read but not write, and its contents will not be lost after power failure. We will not introduce all the other equipment in the host computer here. In short, they all perform their respective duties to make the computer run normally, thus making the computer a good helper in our work and life.DDOS is not an attack, but a general term for a large category of attacks. There are dozens of types of it, and new attack methods are still being invented. Every link of website operation can be the target of attack. As long as one link is breached and the whole process cannot run, the purpose of paralyzing the service is achieved.吴梅没有什么犹豫，立即点头答应下来，这个时候没有什么犹豫的，毕竟关系到儿子的安全。Events replace the work that could only be performed by the scheduled tasks of the operating system, and MySQL's event scheduler can be accurate to one task per second, while the scheduled tasks of the operating system (such as CRON under Linux or task planning under Windows) can only be accurate to one task per minute.就听书生叹气道：这孩子，真是让本县不知如何说好了。故事讲述一位名叫Pailin（小名Eoei）的医生经历了男友劈腿闺蜜后自愿前往一个偏远的山村工作。在这里她遇见了以前在曼谷有过节的村长Dumrong，两人发生了一系列啼笑皆非的故事…