【判断题】
DDoS攻击是指攻击者通过控制大量的僵尸主机，向目标网络发送大量精心构造的攻击报文，从而使被攻击者产生拒绝向正常用户的请求提供服务的效果
A. 对
B. 错
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答案
A
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在 Best-Effort、Integrated Service、Differentiated Service三种服务模型中,只有Integrated Service与 Differentiated Service这两种能提供多服务的Qos保障。在实际网络建设中,网络边缘应该使用 Integrated Service方式,网络核心使用Differentiated Service方式
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