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H3CSE-RS-NSO Sample Questions:

1. 和 IKE 野蛮模式相比, IKE 主模式具备以下哪些特点 ?

A) IKE 主模式的安全性高于野蛮模式
B) 在通信双方能预先得知发起者的 IP 地址,并且需要使用预共享密钥的情况下,只能使用主模式
C) 采用 IKE 主模式可以提高协商速度
D) IKE 主模式可以提供身份验证

2. CAR 中配置的规则对报文的处理步骤按照从前到后的顺序依次为

A) 评估、丢弃、继续
B) 评估、分类、处置
C) 分类、评估、处置
D) 评估、继续、丢弃

3. 在 L2TP 组网中, LNS 对用户的验证方式有三种:代理验证、强制 CHAP 认证和 LCP 重协商,优先级最高的是。

A) 都相同
B) 强制 CHAP 验证
C) 代理验证
D) LCP 重协商

4. 四台路由器 R1 、 R2 、 R3 和 R4 顺序相连, R1 和 R4 上创建 Loopback0 接口,接口地址分别为 1.1.1.1 和 4444 ,四台设备分别配置动态路由协议,保证 R1 和 R4 的 Loopback0 地址路由可达, R1 和 R4 间建立 GRE Tunnel ,查看 R1 上 Tunnel 接口信息如下:
[R1] displa interface Tunnel 0
Tunnelo current state: UP
Line protocol current state: UP
Description: Tunnelo Interface
The Maximum Transmit Unit is 1476
Internet Address is 10.0.0.1/30 Primar
Encapsulation is TUNNEL, aggregation ID not set
Tunnel source l.1.1.1, destination 4.4.4.4
Tunnel keepalive disable
Tunnel protocol/transport GRE/IP
GRE ke disabled
Check summing of GRE packets disabled
Last 300 seconds input: 2 btes/sec, 0 packets/sec
Last 300 seconds output: 2 btes/sec, 0 packets/sec
15packets input, 840 btes
0 input error
27packets output, 1248 btes
00utput error
此时,若中断 R2 和 R3 之间链路,则下列说法正确的是。

A) R4 的 Tunnel 接口的源 IP 为 1.1.1.1 ,目的 IP 为 4.4.4.4
B) R4 的 Tunnel 接口 IP 地址应为 10.0.0.2
C) R1 上的 Tunnel 接口保持 UP 状态
D) R1 上的 Tunnel 接口状态 DOWN

5. 四台路由器 R1 、 R2 、 R3 和 R4 顺序相连, R1 和 R4 上创建 Loopback0 接口,接口地址分别为 1.1.1.1 和 4444 ,四台设备分别配置静态路由协议,保证 R1 和 R4 的 Loopback0 地址路由可达, R1 和 R4 间建立 GRE Tunnel ,查看 R1 上 Tunnel 接口信息如下:
[R1] displa interface Tunnel O
Tunnelo current state: UP
Tunnelo current statle: UP
Line protocol current state: UP
D. escription: Tunnel 0 Interface
The Maximum transmit Unit is 1476
Internet Addess is 10.0.0.1/30 Primar .Encapsulation isTUNNEL aggregation ID not set
Tunnel source l.1.1.1 destination 4.4.4.4
Tunnel keeepalive disable
Tunnel protocol/transport GRE/IP.GRE key disable
Checksumming of GRE packets disabled
Last 300 seconds input: . 2 btes/secl 0 packet/sec.Last 300 seconds output : . .2 bytes/sec, O packets/sec .15.packets input 840bytes.0. input error
27packets output, 1248btes
00utput error
此时,若中断 R2 和 R3 之间链路,则下列说法正确的是

A) R4 的 Tunnel 接口 IP 地址应为 10.0.0.2
B) R4 的 Tunnel 接口的源 IP 为 4.4.4.4 ,目的 IP 为 1.1.1.1
C) R1 上的 Tunnel 接口状态 DOWN
D) R1 上的 -Tunnel 接口保持 UP 状态

Solutions: