访问控制列表access-list 100 deny ip 10.1.10.100.0.255.255 anyeq80的含义是：（）。

A:规则序列号是100，禁止到10.1.10.10主机的telnet访问 B:规则序列号是100，禁止到10.1.0.0/16网段的www访问 C:规则序列号是100，禁止从10.1.0.0/16网段来的www访问 D:规则序列号是100，禁止从10.1.10.10主机来的rlogin访问

如下访问控制列表的含义是：（）
access-list 100 denyicmp10.1.10.100.0.255.255 any host-unreachable

A:规则序列号是100，禁止到10.1.10.10主机的所有主机不可达报文 B:规则序列号是100，禁止到10.1.0.0/16网段的所有主机不可达报文 C:规则序列号是100，禁止从10.1.0.0/16网段来的所有主机不可达报文 D:规则序列号是100，禁止从10.1.10.10主机来的所有主机不可达报文

访问控制列表access-list 100 deny ip10.1.10.100.0.255.255 any eq80的含义是：（）

A:规则序列号是100，禁止到10.1.10.10主机的telnet访问 B:规则序列号是100，禁止到10.1.0.0/16网段的www访问 C:规则序列号是100，禁止从10.1.0.0/16网段来的www访问 D:规则序列号是100，禁止从10.1.10.10主机来的rlogin访问

在一台Cisco路由器的g0/1端口上，用标准访问控制列表禁止源地址为10.0.0.0-10.255.255.255和172.16.0.0-172.31.255.255的数据包进出路由器。下列access-list配置，正确的是______。

A:Router (config) #access-list 30 deny 10.0.0.0 0.255.255.255 log B:Router (config) #access-list 30 deny 172.16.0.0 0.15.255.255 C:Router (config) #access-list 30 permit any D:Router (config) #interface g0/1 E:Router (config-if) #ip access-group 30 in F:Router (config-if) #ip access-group 30 out G:Router (coilfig) #access-list 30 deny 10.0.0.0 255.255.255.0 log H:Router (config) #access-list 30 deny 172.16.0.0 255.240.0.0 I:Router (config) #access-list 30 pemlit any J:Router (config) #interface g0/1 K:Router (config-if) #ip access-group 30 in L:Router (config-if) #ip access-group 30 out M:Router (config) #access-list 100 deny 10.0.0.0 0.255.255.255 log N:Router (config) #access-list 100 deny 172.16.0.0 0.15.255.255

在一台Cisco路由器上封禁ICMP协议，只允许215.192.40.16/28和202.204.28.0/24子网的ICMP数据包通过路由器，下列正确的access-list配置是______。

A:Router(config)#access-fist 100 permit icmp 215.192.40.16 255.255.255.240 any B:Router(config)#access-list 100 permit icmp 202.204.28.0 255.255.255.0 any C:Router(config)#access-list 100 deny icmp any any D:Router(config)#access-list 1 00 permit ip any any E:Router(config)# F:Router(config)#access-list 98 permit icmp 215.192.40.16 0.0.0.15 any G:Router(config)#access-list 98 permit icmp 202.204.28.0 0.0.0.255 any H:Router(config)#access-]ist 98 deny icmp any any I:Router(config)#access-list 98 permit ip any any J:Router(config)# K:Router(config)#access-1ist 198 permit icmp 215.192.40.16 0.0.0.15 any L:Router(config)#access-list 198 permit icmp 202.204.28.0 0.0.0.255 any M:Router(config)#access-list 198 deny icmp any any N:Router(config)#access-list 198 permit ip any any

在一台Cisco路由器的g0/1端口上，用标准访问控制列表禁止源地址为10.0.0.0-10.255.255.255和172.16.0.0-172.31.255.255的数据包进出路由器。下列access-list配置，正确的是______。

A:Router(config)#aecess-fist 30 deny 10.0.0.0 0.255.255.255 log B:Router(corlfig)#access-list 30 deny 172.16.0.0 0.15.255.255 C:Router(config)#access-list 30 permit any D:Router(config)#interface g0/1 E:Router(config-if)#ip access-group 30 in F:Router(config-if)#ip access-group 30 out G:Router(config)#access-list 30 deny 10.0.0.0 255.255.255.0 log H:Router(config)#access-list 30 deny 172.16.0.0 255.240.0.0 I:Router(config)#access-list 30 permit any J:Router(config)#interface g0/1 K:Router(config-if)#ip access-group 30 in L:Router(config-if)#ip access-group 30 out M:Router(config)#access-list 100 deny 10.0.0.0 0.255.255.255 log N:Router(config)#access-list 100 deny 172.16.0.0 0.15.255.255

封禁ICMP协议，只转发212.78.170.166/27所在子网的所有站点的ICMP数据包，正确的access-list配置是______。

A:Router(config)#access-list 110 permit icmp 212.78.170.166 0.0.0.0 any B:Router(config)#access-list 110 deny rcmp any any C:Router(config)#access-list 110 permit ip any any D:Router(config)#access-list 110 permit icmp 212.78.170.0 255.255.255.224 any E:Router(config)#access-list 110 permit ip any any F:Router(config)#access-list 110 deny icmp any any G:Router(config)#access-list 110 permit icmp 212.78.170.0 0.0.0.255 any H:Router(config)#access-list 110 deny icmp any any I:Router(config)#access-list 110 permit ip any any J:Router(config)#access-list 110 permit icmp 212.78.170.160 0.0.0.31 any K:Router(config)#access-list 110 deny icmp any any L:Router(config)#access-list 110 permit ip any any

在一台Cisco路由器上封禁ICMP协议，只允许215.192.40.16/28和202.204.28.0/24子网的ICMP数据包通过路由器，下列正确的access-list配置是______。

A:Router(config)#access-list 100 permit icmp 215.192.40.16 255.255.255.240 any B:Router(config)#access-list 100 permit icmp 202.204.28.0 255.255.255.0 any C:Router(config)#aceess-list 100 deny icmp any any D:Router(config)#access-list 100 permit ip any any E:Router(config)# F:Router(config)#access-list 98 permit icmp 215.192.40.16 0.0.0.15 any G:Router(config)#access-list 98 permit icmp 202.204.28.0 0.0.0.255 any H:Router(config)#access-list 98 deny icmp any any I:Router(config)#access-list 98 permit ip any any J:Router(config)# K:Router(config)#access-list 198 permit icmp 215.192.40.16 0.0.0.15 any L:Router(config)#access-list 198 permit icmp 202.204.28.0 0.0.0.255 any M:Router(config)#access-list 198 deny icmp any any N:Router(config)#access—list 198 permit ip any any

在一台Cisco路由器的g0/1端口上，用标准访问控制列表禁止源地址为10.0.0.0～10.255.255.255和172.16.0.0～172.31.255.255的数据包进出路由器。下列access-list配置，正确的是（）。

A:Router(config)#access-list 30 deny 10.0.0.0 255.0.0.0 log B:Router(config)#access-list 30 deny 172.16.0.0 255.240.0.0 C:Router(config)#access-list 30 permit any D:Router(config)#interface g0/1 E:Router(config-if)#ip access-group 30 in F:Router(config-if)#ip access-group 30 out G:Router(config)#access-list 30 deny 10.0.0.0 0.255.255.255 log H:Router(config)#access-list 30 deny 172.16.0.0 0.15.255.255 I:Router(conng)#access-list 30 permit any J:Router(config)#interface g0/1 K:Router(config-it)#ip access-group 30 in L:Router(config-it)#ip access-group 30 out M:Router(config)#access-list 100 deny 10.0.0.0 0.255.255.255 log N:Router(config)#access-list 100 deny 172.16.0.0 0.15.255.255

封禁ICMP协议，只转发212.78.170.166/27所在子网的所有站点的ICM数据包，正确的access-list配置是（）。

A:Router(config)#access-list 110 permit icmp 212.78.170.166 0.0.0.0 any B:Router(config)#access-list 110 deny icmp any any C:Router(config)#access-list 110 permit ip any any D:Router(config)#access-list 110 permit icmp 212.78.170.0 255.255.255.224 any E:Router(config)#access-list 110 permit ip any any F:Router(config)#access-list 110 deny icmp any any G:Router(config)#access-list 110 permit icmp 212.78.170.0 0.0.0.255 any H:Router(config)#access-list 110 deny icmp any any I:Router(config)#access-list 110 permit ip any any J:Router(config)#access-list 110 permit icmp 212.78.170.160 0.0.0.31 any K:Router(config)#access-list 110 deny icmp any any L:Router(config)#access-list 110 permit ip any any