【单选题】【消耗次数：1】
( )利用操作系统或应用软件自身具有的bug进行攻击。
①
安全漏洞攻击
②
DoS(拒绝服务攻击)
③
木马程序
④
扫描攻击
参考答案：
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【多选题】
拒绝服务攻击是黑客常用的攻击手段之一，以下属于拒绝服务攻击防范措施的是：（ ）
①
A.安装防火墙，禁止访问不该访问的服务端口，过滤不正常的畸形数据包
②
B.安装先进杀毒软件，抵御攻击行为
③
C.安装入侵检测系统，检测拒绝服务攻击行为
④
D.安装安全评估系统，先于入侵者进行模拟攻击，以便及早发现问题并解决
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