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

1. 华为 USG 防火墙,在双机热备组网下（如图), PC 通过 SSH 无法登陆备防火墙 FW2 的外网口实 IP 地址,查看主备防火墙上对应的会话如下,分析下对于这个故障下列哪些说法是对的 ?
HRP_A <E1000-1> display firewall session table verbose source inside 192.168.22.151
tcp VPN: public ->
public
Zone: trust -> local TTL: 00:00:05 Left: timeout
Interface: G0/0/1 Nexthop: 192.168.22.122 MAC: 00-22-a1-06-b3-cb
<-- packets: 1
bytes: 48 -> packets: 0 bytes: 0
192.168.22.122:22 <-- 192.168.22.151:4354
HRP_S <-E1000-2>display firewall session table verbose source inside 192.168.22.151
tcp VPN: public -> public
Zone: trust -> local TTL: 00:00:05 Left: timeout
Interface: I0 Nexthop: 127.0.0.1 MAC: 00-00-00-00-00-00
<-- packets: 1
bytes: 48 -> packets: 1 bytes: 44
192.168.22.122:22 <-- 192.168.22.151:4354

A) PC 登陆备防火墙 FW2 的时候存在来回路径不一致。
B) 由于关闭铬路状态检测功能 indo firewall session link-state check 导致的问题。
C) 由于 SSH 客户端在登陆过程中支持报文重传。
D) 由于关闭了 hrp mirror session enable 可能导致该问题。

2. USG 作为总部网关,出差用户需要使用 Internet 建立 VPN 隧道,访问总部资源,且出差用户不需要安装任何拨号软件,以下哪种 VPN 技术最合适:

A) L2TP
B) IPsec VPN
C) GRE
D) SSL VPN

3. 攻击者以被攻击者的 IP 地址向网络中的广播地址发送 TCMP 请求报文,使得网络中的所有主机向被攻击者回应 ICMP 应答报文,造成受害者系统繁忙,链路拥塞。
此种攻击为何攻击 ?

A) Land 攻击
B) IP 欺骗攻击
C) Smurf 攻击
D) Fraggle 攻击

4. 总部和分支机构之间使用 IPsec 隧道通信,为了确保数据在 Internet 上传输时的安全性。管理员使用双机热备功能提高总部和分支机构通信的可靠性,避免总部的一台 USG 出现故障造成分支机构无法访问总部。
根据以下组网图,下列说法正确的是 ?

A) 只能采取 ESP 和 Tunnel 模式封装。
B) 只能使用主备备份方式下的 IPsec 双机热备。
C) USG A , USG_B 和 USG_C 只需要配置 Internet 的路由,无需在 USG_A , USG_B 和 USG_C 配置分支内网到总部内网间的路由。
D) USG A , USG_B 必须开启 NAT 穿越。

5. 在双机热备的场景,关于防火墙主设备和备设备描述错误的是 ?

A) 配置主设备界示 HRP_A ,配置从设备界示 HRP_S ,而且不随优先级变化而变化。
B) 当双机热备工作在主备状态下,主用设备的命令提示符显示 HRPA ,备用设备的命令提示符显示 HRP_S 。
C) 只有主设备才能进行命令配置,备用设备命令不能进行配置。
D) 默认情况下,主用设备的配置会立刻备份到备用设备上。

Solutions: