H3C Constructing Small - and Medium - Sized Enterprise Network Sample Questions:
1. 如图所示网络环境中,在 RTA 上执行如下 NAT 配置:
[RTA]acl number 2000
[RTA-acl-basic-2000]rule 0 permit source 100.0.0.0 0.0.0.255
[RTA-acl-basic-2000]nat address-group 1 200.76.28.11 200.76.28.11
[RTA]interface Ethernet0/1
[RTA-Ethernet0/1]nat outbound 2000 address-group 1
配置后, Client_A 和 Client_B 都在访问 Server ,则此时 RTA 的 NAT 表可能为 ______ 。
A) Protocol GlobalAddr Port InsideAddr Port DestAddr Port 1 200.76.28.11 12289 100.0.0.1 1024 200.76.29.4 1024 VPN: 0 , status: NOPAT, TTL: 00:01:00, Left: 00:00:59 1 200.76.28.11 12288 100.0.0.2 512 200.76.29.4 512 VPN: 0 , status: 11, TTL: 00:01:00, Left: 00:00:51
B) Protocol GlobalAddr Port InsideAddr Port DestAddr Port 1 200.76.28.11 12289 100.0.0.1 1024 200.76.29.4 1024 VPN: 0 , status: 11, TTL: 00:01:00, Left: 00:00:59 1 200.76.28.11 12288 100.0.0.2 512 200.76.29.4 512 VPN: 0 , status: 11, TTL: 00:01:00, Left: 00:00:51
C) Protocol GlobalAddr Port InsideAddr Port DestAddr Port 1 200.76.28.11 12289 100.0.0.1 1024 200.76.29.4 1024 VPN: 0 , status: 11, TTL: 00:01:00, Left: 00:00:59 1 200.76.28.12 12288 100.0.0.2 512 200.76.29.4 512 VPN: 0 , status: 11, TTL: 00:01:00, Left: 00:00:51
D) Protocol GlobalAddr Port InsideAddr Port DestAddr Port 1 200.76.28.12 12289 100.0.0.1 1024 200.76.29.4 1024 VPN: 0 , status: 11, TTL: 00:01:00, Left: 00:00:59 1 200.76.28.11 12288 100.0.0.2 512 200.76.29.4 512 VPN: 0 , status: 11, TTL: 00:01:00, Left: 00:00:51
2. 一台空配置的 MSR 路由器通过多个接口接入同一个 OSPF 网络,所有这些接口都启动了 OSPF ,配置完成后,该路由器已经成功学习到了网络中的 OSPF 路由。
如今在该路由器的一个 OSPF 接口上运行如下命令:
[MSR-GigabitEthernet0/0]ospf cost 256
在保持其他配置不变的情况下,关于该配置的理解正确的是 _____ 。
A) 该配置命令无效,因为命令输入错误
B) 该配置不会影响数据包的转发路径
C) 该配置可能影响数据包的转发路径
D) 该配置命令无效,因为 Cost 的最大值为 255
3. 在运行了 RIP 的 MSR 路由器上看到如下路由信息:
<MSR>display ip routing-table 6.6.6.6
Routing Table: Public
Summary Count: 2
Destination/Mask Proto Pre Cost NextHop Interface
6.0.0.0/8 RIP 100 1 100.1.1.1 GE0/0
6.6.6.0/24 Static 60 0 100.1.1.1 GE0/0
此时路由器收到一个目的地址为 6.6.6.6 的数据包,那么 ______ 。
A) 该数据包将优先匹配路由表中的静态路由,因为其掩码最长
B) 该数据包将优先匹配路由表中的 RIP 路由,因为其掩码最短
C) 该数据包将优先匹配路由表中的静态路由,因为其度量值最小
D) 该数据包将优先匹配路由表中静态路由,因为其优先级高
4. 在路由器上依次配置了如下两条静态路由:
ip route-static 192.168.0.0 255.255.240.0 10.10.202.1 preference 100
ip route-static 192.168.0.0 255.255.240.0 10.10.202.1
那么关于这两条路由,如下哪些说法正确 ?
A) 路由器只会生成第 2 条配置的路由,其优先级为 60
B) 路由器只会生成第 2 条配置的路由,其优先级为 0
C) 路由表会生成两条去往 192.168.0.0 的路由,两条路由负载分担
D) 路由表会生成两条去往 192.168.0.0 的路由,两条路由互为备份
5. 要查看 NAT 数据包的 debug 信息,应使用 ______ 命令打开 debug 信息并输出到显示器上。
A) terminal monitor debugging nat
B) terminal debugging debugging nat
C) terminal monitor terminal debugging debug nat
D) terminal monitor terminal debugging debugging nat packet
Solutions:
| Question # 1 Answer: B | Question # 2 Answer: C | Question # 3 Answer: A | Question # 4 Answer: A | Question # 5 Answer: D |
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