关于ICMP协议，下面的论述中正确的是（）。

A:通过ICMP可以找到与MAC地址对应的IP地址 B:通过ICMP可以把全局IP转换为本地IP地址 C:ICMP是用于动态分配IP地址 D:ICMP可传送IP通信过程中出现的错误信息

用扩展访问控制列表配置封禁ICMP协议，只允许168.27.95.0/24子网的ICMP数据包通过路由器，正确的配置是______。

A:access-list 90 deny icmp 168.27.95.0 255.255.255.0 any access-list 90 deny icmp any any access-list 90 permit ip any any B:access-list 100 permit icmp 168.27.95.0 0.0.0.255 any access-list 100 permit ip any any C:access-list 110 permit icmp 168.27.95.0 255.255.255.0 any access-list 110 deny icmp any any D:access-list 120 permit icmp 168.27.95.0 0.0.0.255 any access-list 120 deny icmp any any access-list 120 permit ip any any

下面关于ICMP 协议的描述中，正确的是 （ ） 。

A:ICMP 协议根据MAC 地址查找对应的IP 地址 B:ICMP 协议把公网的IP 地址转换为私网的IP 地址 C:ICMP 协议用于控制数据报传送中的差错情况 D:ICMP 协议集中管理网络中的IP 地址分配

若要求路由器的某接口上只封禁ICMP协议，但允许159.67.183.0/24子网的ICMP数据包通过，那么使用的access-list命令是______。

A:access-list 120 deny icmp 159.67.183.0 0.0.0.255 any B:access-list 120 permit ip any any C:access-list 10 permit icmp 159.67.183.0 0.0.0.255 any D:access-list 10 deny icmp any any E:access-list 10 permit ip any any F:access-list 99 permit icmp 159.67.183.0 0.0.0.255 any G:access-list 99 deny icmp any any H:access-list 110 permit icmp 159.67.183.0 0.0.0.255 any I:access-list 110 deny icmp any any J:access-list 110 permit ip any any

定义一个用于封禁ICMP协议而只允许转发166.129.130.0/24子网的ICMP数据包的访问控制列表，Cisco路由器的正确配置是______。

A:access-list 198 permit icmp 166.129.130.0 255.255.255.0 any B:access-list 198 deny icmp any any C:access-list 198 permit ip any any D:access-list 198 permit icmp 166.129.130.0 0.0.0.255 any E:access-list 198 deny icmp any any F:access-list 198 permit ip any any G:access-list 99 permit icmp 166.129.130.0 0.0.0.255 any H:access-list 99 deny icmp any any I:access-list 99 permit ip any any J:access-list 100 permit icmp 166.129.130.0 0.0.0.255 any K:access-list 100 permit ip any any L:access-list 100 deny icmp any any

Internet的网络层含有四个重要的协议，分别为 ( )

A:IP，ICMP，ARP，UDP B:TCP，ICMP，UDP，ARP C:IP，ICMP，ARP，RARP D:UDP，IP，ICMP，RABP

Internet的网络层含有四个重要的协议，分别为 ( )

A:IP，ICMP，ARP，UDP B:TCP，ICMP，UDP，ARP C:IP，ICMP，ARP，RARP D:UDP，IP，ICMP，RABP

若要求路由器的某接口上只封禁ICMP协议，但允许159.67.183.0/24子网的ICMP数据包通过，那么使用的access-list命令是（）。

A:access-list 120 deny icmp 159.67.183.0 0.0.0.255 any access-list 120 permit ip any any B:access-list 10 permit icmp 159.67.183.0 0.0.0.255 any access-list 10 deny icmp any any access-list 10 permit ip any any C:access-list 99 permit icmp 159.67.183.0 0.0.0.255 any access-list 99 deny icmp any any D:access-list 110 permit icmp 159.67.183.0 0.0.0.255 any access-list 110 deny icmp any any access-list 110 permit ip any any