下列访问控制列表禁止所有到10.0.1.0/24子网的telnet连接？

A.ccess list 10 permit host 192.168.2.0 0.0.0.255 any access list 10 deny host 192.168.2.8 any B.access list 10 permit host 192.168.2.8 any access list 10 deny host 192.168.2.0 0.0.0.255 any C.access list 10 deny host 192.168.2.0 0.0.0.255 any access list 10 permit host 192.168.2.8 any D.access list 10 deny host 192.168.2.0 0.0.0.255 any access list 10 permit host 192.168.2.8 any

A.access list 10 permit host 192.168.2.0 0.0.0.255 any access list 10 deny host 192.168.2.8 any B.access list 10 permit host 192.168.2.8 any access list 10 deny host 192.168.2.0 0.0.0.255 any C.access list 10 deny host 192.168.2.0 0.0.0.255 any access list 10 permithost 192.168.2.8 any D.access list 10 deny host host 192.168.2.8 any access list 10 permit host 192.168.2.0 0.0.0.255 any

A.正确 B.错误

A.0－15 B.0－16 C.0－31 D.16－31

A.Router(config)#access-list 10 permit 212.33.127.0 255.255.255.0 Router(config)#line vty 0 5 Router(config-line)#access-class 10 in B.Router(config)#access-list 20 permit 212.33.127.0 0.0.0.255 Router(config)#line vty 0 5 Router(config-line)#access-class 20 in C.Router(config)#access-list 99 permit 212.33.127.0 0.0.0.255 Router(config)#line vty 0 5 Router(config-line)#access-class 99 in D.Router(config)#access-list 100 permit 212.33.127.0 0.0.0.255 Router(config)#line vty 0 5 Router(config-line)#access-class 100 in

A.标准ACL可以根据分组中的IP源地址进行过滤 B.扩展ACL可以根据分组中的IP目标地址进行过滤 C.标准ACL可以根据分组中的IP目标地址进行过滤 D.扩展ACL可以根据不同的上层协议信息进行过滤

A.访问列表有两类：IP标准列表，IP扩展列表 B.标准访问列表根据数据包的源地址来判断是允许或者拒绝数据包 C.normalspecial字段表示该规则是在普通时间段中有效还是在特殊时间段有效，缺省是在普通时间段内有效 D.扩展访问列表使用除源地址以外更多的信息描述数据包匹配规则

A.access-list 3000 rule10 deny telnet any 202.112.111.0 0.0.0.255 ep 23 B.access-list 3000 rule 10 deny udp any 202.112.111.0 ep telnet C.access-list 3000 rule 10 deny tcp any 202.112.111.0 0.0.0.255 ep 23 D.access-list 3000 rule 10 deny tcp any 202.112.111.0 255.255.255.0 ep 23