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

1. 在如图的 TCP 断开连接 4 次握手中, ① 和 ② 应分别是:

A) a+1 和 b+1
B) a 和 b
C) a 和 b+1
D) a+1 和 b

2. 为了保证设备正常运行、不受安全威胁,需要对设备进行安全加固,考虑正确的是:

A) 使用 Telnet 协议进行设备管理。
B) SNMPv2 版本和网管通信。
C) 设置 Console 密码,并且设置管理员界面的登录超时时间和认证次数限制。
D) 从 Untrust 、 Trust 、 DMZ 区域到 Local 区域的安全策略只打开允许 ICMP 、 SSH 登录、 SNMP 等端口。

3. 防火墙部署在无线用户的移动终端和 WAP 网关之间,移动终端在 trust 区域, WAP 网关在 untrust 区域,并做了如下配置:
[USG] ad 3000
[USG-acl-adv-3000] rule permit ip destination 202.10.10.2 0
[USG-acl-adv-3000] quit
[USG] fir-all zone trust
[USG-zone-trust] destination-nat 3000 address 200.10.10.2
[USG-zone-trust] quit
以下描述正确的是:

A) 该配置还可应用到服务器地址映射场景下
B) 防火墙将访问 202.10.10.2 网关地址的数据包的目的地址转换为 200.10.10.2
C) 命令 firewall zone trust 应该修改为 firewall interzone untrust trust
D) 命令 firewall zone trust 应该修改为 firewall interzone trust untrust outbound

4. 在 IPsec 协商失败的过程中,打开 IKE 的调试开关,显示如下信息: got NOTIFY of type NO_PROPOSAL CHOSEN 或 drop message from A.B.C.D due to notification type NO_PROPOSAL CHOSEN ,应该如何处理 ?

A) 如果是第二阶段没有协商成功,可能是 ACL 没有匹配。
B) 如果第一阶段没有协商成功,可能配置的 pre-share-key 不对。
C) 如果是第二阶段没有协商成功,可能是 ipsec 提议没有匹配。
D) 如果第一阶段没有协商成功,可能是 ike 提议不匹配。

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

Solutions: