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The main reason why DDOS attacks are difficult to defend is that there are too many vulnerabilities and attack methods that can be exploited. In the OSI seven-layer network model used in the network data transmission process, basically each layer has protocols that can be exploited by DDOS attacks. According to the different network levels of the protocols used for DDOS attacks, this paper summarizes the currently known DDOS attack types and their defense measures as shown in Table 1-3. For more detailed information on current DDOS attack and defense, please refer to Huawei DDOS attack and defense summary post.Read the annotation or configuration file, see which Source JuiceMaker depends on, and get the class name.花婆子立即精神百倍，急忙应道：好，好。Intelligent shopping guides have solved this problem very well. "80% of the customers in Osaka Weaving House are Tmall users, and consumers will think it is normal to receive shopping guide information through hand-washing." Wang Bo said that the intelligent shopping guide can push specific product information such as "striped short-sleeved household clothes" and "cotton pajamas" according to customer characteristics, greatly improving the conversion rate.　　对他人毫无兴趣，总是独自一人读书的高中生“我”。这样的“我”有一天，偶然捡到一册写着《共病文库》的文库本。那是，天真烂漫的班上人气王·山内樱良私下记录的日记本。里面记载着她身患胰脏的疾病，已经时日无多……。The structure using monomer mode is as follows demo2, All kinds of schools at all levels of non normal professional graduates to apply for teacher qualifications should be deployed according to the provincial education department to supplement education, psychology courses, and by the provincial education department unified organization examination qualified.