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Huawei HCIE-Security (Huawei Certified Internetwork Expert-Security) (H12-731中文版) Sample Questions:

1. 企业内网用户通过 USG 防火墙上网时,某个 URL 已经加入黑名单,但用户仍然可以访问,造成 URL 过滤功能失效的可能原因是什么 ?

A) 没有提交 URL 过滤配置文件
B) 没有升级远程 URL 名单
C) 没有开启 URL 远程查询功能
D) 没有将 URL 过滤策略应用在相应的域间方向上

2. 对于 - 些大的 IP 数据包,为了满足链路层的 MTU （ Maximum Transmission Unit )的要求,需要传送过程中对其进行分片,分成几个 IP 包。在每个 IP 报头中有一个偏移字段和一个拆分标志（ MF ),其中偏移字段指出了这个片段在整个 IP 包中的位置。如果攻击者截取 IP 数据包后,把偏移字段设置成不正确的值,接收端在收到这些分拆的数据包后,就不能按数据包中的偏移字段值正确组合出被拆分的数据包,这样,接收端会不停的尝试,以至操作系统因资源耗尽而崩溃。
此种攻击方法是什么 ?

A) Teardrop 攻击
B) TCP 报文标志位攻击
C) WinNuke 攻击
D) Ip 分片报文攻击

3. 如图所示攻击,相应的防御方法有:

A) 通过 TTL 检查的方法进行防御
B) 载荷检查防御
C) 通过源认证的方法防御
D) 指纹学习防御
E) 通过关联的 TCP 协议对用户进行验证

4. 内网用户可以正常访问 Internet ,双链路为主备备份。
对于 Internet 用户,可以通过公网地址访问 FTP 服务器。对外公布 2 个公网地址, 200.1.1.200 和 202.1.1.200 。
以下配置正确的是 ?

A) [USG] nat server s1 protocol tcp global 200.1.1.200 ftp inside 192.168.1.254 ftp [USG] nat server s2 protocol tcp global 202.1.1.200 ftp inside 192.168.1.254 ftp
B) [USG] nat server s1 zone untrust1 protocol global 200.1.1.200 ftp inside 192.168.1.254 ftp [USG] nat server s2 zone untrust2 protocol global 202.1.1.200 ftp inside 192.168.1.254 ftp
C) [USG] ip-link check enable [USG] ip-link 1 destination 202.1.1.2 interface GigabitEthernet 0/0/2 mode icmp [USG] ip route-static 0.0.0.0 0.0.0.0 200.1.1.2 [USG] ip route-static 0.0.0.0 0.0.0.0 200.1.1.2 preference 70 track ip-link 1
D) USG] ip-link check enable [USG] ip-link 1 destination 200.1.1.2 interface GigabitEthernet 0/0/2 mode icmp [USG] ip route-static 0.0.0.0 0.0.0.0 200.1.1.2 track ip-link 1 [USG] ip route-static 0.0.0.0 0.0.0.0 200.1.1.2 preference 70

5. 访问的网页内容中如果包含过滤的内容,结果将是如何 ?

A) 过滤内容以 "*" 代替。
B) 显示 " 网页已经被过滤 " 。
C) 显示 " 无法打开网页 "
D) 过滤内容被删除,将不被显示。

Solutions: