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- 多项选择题On the serial interface of a router, an inbound access list is configured to deny all traffic from UDP and TCP ports 21, 23, and 25. All other traffic is permitted. Based on this information, which types of traffic will be allowed through this interface?（）
A、SMTP
B、DNS
C、FTP
D、Telnet
E、HTTP
F、POP3
- B,E,F
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