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H3C GB0-392 Exam Syllabus Topics:

H3CSE-RS-NSO Sample Questions:

1. 下列 PPPoE 的报文中,哪些是以广播形式发送的 ?

A) PADS （ PPPoE Active Discover Session-Confirmation )
B) PADO （ PPPoE Active Discover Offer )
C) PADR （ PPPoE Active Discover Request )
D) PADI （ PPPoE Active Discover Initiation )
E) PADT （ PPPoE Active Discover Terminate )

2. 下列 VPN 技术中,属于第二层的 VPN 的有

A) GRE VPN
B) VLL
C) IPSec VPN
D) VPLS

3. 下面关于 AH （ Authentication Header ,验证头)和 ESP （ Encapsulating Securit Paload ,封装安全载荷)的描述正确的有。（选择一项或多项)

A) 两者都可以提供数据源验证以及可选的抗重播服务
B) 两者都可以提供机密性保护
C) 两者都可以同时使用
D) AH 不能提供数据的完整性保护

4. 下列哪些是关于语音质量的测量标准 ?

A) PSQM
B) PQSM
C) MOS
D) PESQ

5. 在 L2TP VPN 中, LAC （ LATP Access Concentrator , L2TP 访问集中器)接收到从远程系统向服务器方发送的 IP 数据包,需要对数据包进行相应的封装后发给 LNS （ L2TP Network Server , L2TP 网络服务器), LAC 和 LNS 间传送的数据包的封装格式为

A) 私网数据包 →PPP 头 →L2TPT 头 →UDP 头 → 公网 IP 头
B) 私网数据包 →PPP 头 →UDP 头 → 公网 IP 头 →L2TPT 头
C) 私网数据包 →L2TPT 头 →PPP 头 →UDP 头 → 公网 IP 头
D) 私网数据包 →PPP 头 →UDP 头 →L2TPT 头 → 公网 IP 头

Solutions: