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單項選擇題
Given the configuration shown in the exhibit， which statement is true about traffic from host_ato host_b？（）
[edit security policies from-zone HR to-zone trust]
user@host# showpolicy two {
match {
source-address subnet_a；
destination-address host_b；
application [ junos-telnet junos-ping ]；
}
then {
reject；
}
}
policy one {
match {
source-address host_a；
destination-address subnet_b；
application any；
}
then {
permit；
}
}
host_a is in subnet_a and host_b is in subnet_b.
A.DNS traffic is denied.
B.Telnet traffic is denied.
C.SMTP traffic is denied.
D.Ping traffic is permitted
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