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

1. 以下哪些功能模块可结合 IP-Link 功能使用 ?

A) OSPF
B) DHCP
C) 路由策略
D) VRRP

2. 客户有一台 USG6000 ,远端 pc 想实现通过 l2tp over ipsec 接入访问内网,通过 vpn client 软件拨号不成功。
1 拨号过程中查看 ike sa:
<USG6000>dis ike sa
20:54:36 2013/06/19
current ike sa number: 2
-------------------------------------------------------------------------------
conn-id peer flag phase vpn
--------------------------------------------------------------------------------
40051 <unnamed> NONE v1:2 public
40050 2.2.2.2:12485 NONE v1:1 public
2 debugging ipsec error:
2013-06-19 20:54:21 USG2100 %%01IKE/4/WARNING (I): phase2: security acl mismatch.
*0.46319980 USG IKE/7/DEBUG: Get IPsec policy: get IPsec policy failed
*0.46319930 USG IKE/7/DEBUG: validate_prop: no IPsec policy found
*0.46319980 USG IKE/7/DEBUG: dropped message from 2.2.2.2 due to notification type
INVALID ID INFORMATION
则关于此问题描述正确的是 ?

A) HASH 算法不匹配
B) IPsec 的 IKE 阶段 1 策略配置错误
C) 没有配置 IPsec 策略
D) ACL 配置错误

3. 某网络 IPsec 状态信息如下, [USG A] display ike sa
current ike sa number: 2
---------------------------------------------------------------------------------------
conn-id peer flag phase vpn
----------------------------------------------------------------------------------------
40006 <unnamed> NONE v1:2 public
40004 1.1.1.2 RD|ST v1:2 public
2012-08-08 15:05:15 USG %%01IKE/4/WARNING (I): phase2: proposal or pfs dh-gro up mismatch, please check ipsec proposal and pfs dh-group configuration.
*0.1921499990 USG IKE/7/DEBUG: got NOTIFY of type NO_PROPOSAL_CHOSEN
以下哪个选项是可能的故障原因 ?

A) ACL 配置有误
B) IPsec 提议不匹配
C) PFS 配置不一致
D) IKE 预共享密钥不匹配

4. 某客户使用多个分支设备和总部 USG_A 设备做 IPsec 对接,采用点到多点 IPsec ,子策略方式建立 VPN 。多个分支都是固定 IP 地址,大多数分支到总部 IPsec 链路都可以正常通信,并且内网（分支到总部)之间可以互相通信,唯独其中一个分支的内网 PC 和总部内网之间不能正常通信,但是 IPsec VPN 道已经协商成功。
可能有哪些原因 ?

A) 总部没有到达故障分支的回程路由。
B) 可能一端使用 IKEv2 协商,一端使用 IKEv1 协商。
C) 两端的 IPsec 提议算法不一致,导致报文无法解密。
D) ACL 范围配置错误。

5. 在 USG 防火墙链路状态检测功能开启的情况下,当 TCP 会话的首个分片报文和第二个分片报文发送间隔时间大于会话表老化时间时,会话表将会删除,其后续报文将会重新创建会话表。

A) TRUE
B) FALSE

Solutions: