FTP使用的端口号为：（）

A.RIPV1/V2
B.IGRP和EIGRP
C.OSPF
D.IS-IS

A.access-list  11 deny  tcp 192.168.1.0   0.0.0.255 eq telnet/access-list 111 permit ip any any
B.access-list  111 deny  tcp any  192.168.1.0   eq telnet/access-list 111 permit ip any any
C.access-list  111 deny udp 192.168.1.0   0.0.0.255 eq telnet/access-list 111 permit ip any any
D.access-list  111 deny  tcp any  192.168.1.0   0.0.0.255 eq telnet/access-list 111 permit ip any any

A.30
B.20
C.15
D.25