多选题An inbound access list has been configured on a serial interface to deny packet entry for TCP and UDP ports21, 23 and 25. What types of packets will be permitted by this ACL? (Choose three.)（）AFTPBTelnetCSMTPDDNSEHTTPFPOP3
多选题
An inbound access list has been configured on a serial interface to deny packet entry for TCP and UDP ports21, 23 and 25. What types of packets will be permitted by this ACL? (Choose three.)（）
A
FTP
B
Telnet
C
SMTP
D
DNS
E
HTTP
F
POP3
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