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

1. 某企业有如下需求:
Trust 区域中内网用户的是 192.168.1.0/24 网段,可以访问 Internet ,一共有 50 台主机（ 192.168.1.1-192.168.1.50 ),总带帘为 500M 。
以下规划合理的是:

A) 整体带宽限制为 500M , 192.168.1.1-192.168.1.50 每 IP 的最大带宽是 12M 。
B) 整体带宽限制为 400M ,每 IP 的最大带宽是 12M 。
C) 整体带帘限制为 500M ,保证带帘是 500M ,每 IP 的最大带帘是 10M 。
D) 整体带宽限制为 500M ,每个 IP 的最大带宽是 12M 。

2. 华为防火墙反垃圾邮件功能使用的是 RBL 方法,其对 DNS 服务器有哪些要求 ?

A) 不指定 DNS 服务器时则使用系统模式下配置的 DNS 服务器。
B) 这个 DNS 必须是使用迭代算法的服务器。
C) 这个 DNS 必须是使用递归算法的服务器。
D) 这个 DNS 必须是不被 DNS 劫持的服务器。

3. 在 Portal 认证中,交换机上必须配置的 Portal 参数有 ?

A) Portal 服务器 IP
B) shared-key
C) Portal 页面 URL
D) 设备侦听 Portal 协议报文的端口号
E) Portal 协议版本

4. RADIUS 和 HWTACACS 协议的主要区别包括:

A) HWTACACS 支持对配置命令进行授权, RADIUS 不支持对配置命令进行授权。
B) RADIUS 认证与授权分离, HWTACACS 认证与授权一起处理。
C) RADIUS 使用 TCP 协议,网络传输更可靠, HWTACACS 使用 UDP 协议。
D) HWTACACS 对报文主体全部进行加密, RADIUS 只是对认证报文中的密码字段进行加密。

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

Solutions:

Question # 1 Answer: A

Question # 2 Answer: C,D

Question # 3 Answer: A,B,C

Question # 4 Answer: A,D

Question # 5 Answer: C