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问题详情

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

时间：2022-01-01 15:34 关键词： CCNP(642-813)

答案解析

B| E| F

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