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H3CSE-RS-NSO Sample Questions:

1. 用户想设计一个 H323 网络,要求所有呼叫权限统一集中控制,下列哪些组件是必须的 ?

A) 网守
B) 终端
C) MCU
D) 网关

2. 在 L2TP 组网中,假设 LAC 与 LNS 都已在公共网上,并实现正确联通的情况下,如果 Tunnel 建立失败,那么可能的原因有

A) Tunnel 验证不通过
B) LAC 端设置的用户名及密码有误
C) LNS 端没有设置可以在接收该隧道对端的 L2TP 组
D) 在 LAC 端, LNS 的地址设置不正确

3. 两台安全网关的配置分别为:
RTA
[RTA] ike peer 123
[RTA-ike-peer-123] pre-shared-ke simple 123
[RTA-ike-peer-123] remote-address 10.2.1.2
[RTA-ike-peer-123] local-address 10.2.1.1
[RTA-ike-peer-123] quit
[RTA] ipsec proposal 1
[RTA-ipsec-proposal-1] quit
[RTA] acl number 3000
[RTA-acl-adv-3000] rule 0 permit ip source 10.1.1.0 0.255.255.255
[RTA] ipsec polic 1 1 isakmp
[RTA-ipsec-polic-isakmp-1-1] securit acl 3000
[RTA-ipsec-polic-isakmp-1-1] ike-peer 123
[RTA-ipsec-polic-isakmp-1-1] proposal 1
[RTA-ipsec-polic-isakmp-1-1] quit
[RTA] interface Ethernet 0/1/0
[RTA-Serial0/2/1] ip address 10.2.1.1 255.255.255.0
[RTA] interface Serial 0/2/1
[RTA-Serial0/2/1] ip address 10.2.1.1 255.255.255.0
[RTA-Serial0/2/1] ipsec polic 1
RTB :
[RTB] ike peer 123
[RTB-ike-peer-123] pre-shared-ke simple 123
[RTB-ike-peer-123] remote-address 10.2.1.1
[RTB-ike-peer-123] local-address 10.2.1.2
[RTB-ike-peer-123] quit
[RTB] ipsec proposal 1
[RTB-ipsec-proposal-1] quit
[RTB] acl number 3000
[RTB-acl-adv-3000] rule 0 permit ip source 10.3.1.0 0.255.255.255
[RTB] ipsec polic 1 1 isakmp
[RTB-ipsec-polic-isakmp-1-1] securit acl 3000
[RTB-ipsec-polic-isakmp-1-1] ike-peer 123
[RTB-ipsec-polic-isakmp-1-1] proposal 1
[RTB-ipsec-polic-isakmp-1-1] quit
[RTA] interface Ethernet 0/1/0
[RTA-Serial0/2/1] ip address 10.3.1.1 255.255.255.0
[RTB] interface Serial0/2/1
[RTB-Serial0/2/1] ip address 10.2.1.2 255.255.255.0
[RTB-Serial0/2/1] ipsec polic 1
由此可知。

A) 任何一方发起的 SA 协商都可以成功
B) 只有从 RTB 向 RTA 发起的 SA 协商才可以成功
C) 只有从 RTA 向 RTB 发起的 SA 协商才可以成功
D) 任何一方发起的 SA 协商都不能成功

4. IntServ 模型有以下 ? 特点

A) 可以提供端到端的 QoS 服务
B) 可以在互联网中大规模进行部署
C) 提供绝对和准确的 QoS 保障,不会随网络状态的变化而受到影响
D) 可以跟踪和记录每一条流的状态,扩展性很好

5. 北京某公司一台 PBX 原先通过模拟线路接入运营商电话网络,共使用了 18 线模拟线路,为了减少维护复杂度,拟向运营商申请一根数字线路,是最经济的选择。

A) E&M
B) T1
C) ATM
D) E1

Solutions: