试题一(共20分)
阅读以下说明,回答问题1至问题5,将解答填入答题纸对应的解答栏内。
【说明】
某单位网络结构如图1-1所示,网络中所有路由器均使用RIP协议。
1-1
在网络部署完成后进行如下测试:
1.在主机host101上对Router2的F0/0口及网络1的host1进行了连通性测试,结果如图1-2和图1-3所示。
host101>ping 192.168.0.1 Pinging 192.168.0.1 with 32 bytes of data: Reply from 192.168.0.1: bytes=32 time=1ms TTL=64 Reply from 192.168.0.1: bytes=32 time=1ms TTL=64 Reply from 192.168.0.1: bytes=32 time=1ms TTL=64 Reply from 192.168.0.1: bytes=32 time=1ms TTL=64 Ping statistics for 192.168.0.1: Packets: Sent = 4,Received = 4,Lost = 0(0% loss), Approximate round trip times in milli-seconds: Minimum = 1ms,Maximum = 1ms,Average = 1ms |
图1-2
host101>ping 192.168.0.2 Pinging 192.168.0.2 with 32 bytes of data: Request timed out. Request timed out. Request timed out. Request timed out. Ping statistics for 192.168.0.2: Packets: Sent = 4, Received = 0,Lost = 4(100% loss), |
图1-3
2.在主机host3上对网络1进行了连通性测试,结果如图1-4所示。
host13>ping 192.168.0.2 Pinging 192.168.0.1 with 32 bytes of data: Reply from 192.168.0.1: bytes=32 time=1ms TTL=64 Reply from 192.168.0.1: bytes=32 time=1ms TTL=64 Reply from 192.168.0.1: bytes=32 time=1ms TTL=64 Reply from 192.168.0.1: bytes=32 time=1ms TTL=64 Ping statistics for 192.168.0.1: Packets: Sent = 4,Received = 4,Lost = 0(0% loss), Approximate round trip times in milli-seconds: Minimum = 1ms,Maximum = 1ms,Average = 1ms |
图1-4
3.查看路由器Router3的路由表,结果如图1-5所示。
Router3>show ip route R 192.168.0.0/24 [120/1] via 202.117.112.1,00:00:24,Serial2/0 C 192.168.1.0/24 is directly connected,FastEthemet0/0 R 192.168.2.0/24 [120/1] via 202.117.114.1,00:00:01,Serial3/0 202.117.112.0/30 is subnetted,1 subnets C 202.117.112.0 is directly connected,Serial2/0 R 202.117.113.0/30 [120/1] via 202.117.112.1,00:00:24,Serial2/0 [120/1] via 202.117.114.1,00:00:01,Serial3/0 202.117.114.0/30 is subnetted,1 subnets C 202.117.114.0 is directly connected,Serial3/0 |
图1-5
【问题1】(6分)
请填写hostl的Internet协议属性参数。
IP地址: (1)
子网掩码: (2)
默认网关: (3)
【问题2】(4分)
请填写路由器Routed的S0口的协议属性参数。
IP地址: (4)
子网掩码: (5)
【问题3】(6分)
在路由器Routerl上需进行RIP声明的网络是(6)、(7)和(8)。
(6)~(8)备选答案:
A.192.168.0.1/24 B.192.168.1.1/24 C.192.168.2.1/24
D.202.117.112.1/30 E.202.117.113.1/30 F.202.117.114.1/30
【问题4】(2分)
根据图1-5,在主机host3上对网络1进行了连通性测试时所经过的路径是(9)。
(9)备选答案:
A.host3 → Router3 → Router2 → 网络1
B.host3 → Router3 → Router1 → Router2→ 网络1
【问题5】(2分)
根据测试结果,host 101不能ping通host1的原因是(10)。
(10)备选答案:
A.网络1上host1网卡故障
B.路由器Router2的F0/0接口上对网络3访问网络1进行了过滤
C.路由器Router1的S0接口上对网络3访问网络1进行了过滤
D.路由器Router2的S0接口上对网络3访问网络1进行了过滤