A.)Router (config)#access-list 30 deny udp any any eq 1434
Router (config)#access-list 30 deny tcp any any eq 4444
Router (config)#access-list 30 permit ip any any
B.)Router (config)#access-list 130 deny udp any any eq 1434
Router (config)#access-list 130 deny tcp any any eq 4444
Router (config)#access-list 130 permit ip any any
C.)Router (config)#access-list 110 deny any any udp eq 1434
Router (config)#access-list 110 deny any any tcp eq 4444
Router (config)#access-list 110 permit ip any any
D.)Router (config)#access-list 150 deny udp ep 1434 any any
Router (config)#access-list 150 deny tcp ep 4444 any any
Router (config)#access-list 150 permit ip any any
[单选题]HSRP使用UDP协议,端口号为()。A . 1911B . 1949C . 1985D . 1999
[单选题]HTTP默认端口号为().A . 21B . 80C . 8080D . 23
[单选题]如果要在路由器的某端口上过滤所有端口号为 1434 的 UDP 数据包,那么使用的 access-list 命令是A.)access-list 100 deny udp any any lt 1434B.)access-list 100 deny udp any any gt 1434C.)access-list 100 deny udp any any eq 1434D.)access-list 100 deny udp any any neq 1434
[单选题]ftp协议的端口号为()。A.80B.21C.808
[多选题] FTP使用的端口号为()A .20B .21C .23D .110
[单选题]SMTP的协议端口号为()。A . 20B . 25C . 27D . 29
[单选题]DNS服务的端口号为()。A . 21B . 53C . 23D . 123
[单选题]TELNET使用的端口号为()。A . 8080B . 23C . 161D . 21
[单选题](21)如果要在路由器的某端口上过滤所有端口号为1434的UDP数据包,那么使用的access-list命令是A.access-list 100 deny udp any any lt 1434B.access-list 100 deny udp any any gt 1434C.access-list 100 deny udp any any eq 1434D.access-list 100 deny udp any any neq 1434
[单选题]UDP端口号分为三类,熟知端口号和注册端口号,第三类是()。A.永久端口号B.确认端口号C.客户端口号D.临时端口号