Click the Exhibit button. 
host_a is in subnet_a and host_b is in subnet_b. Given the configuration shown in the exhibit, which statement is true about traffic from host_a to host_b?（）
- A、DNS traffic is denied.
- B、Telnet traffic is denied.
- C、SMTP traffic is denied.
- D、Ping traffic is permitted.
正确答案:B,D
答案解析:有
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