单项选择题

Which zone is a system-defined zone？（）

A.null zone
B.trust zone
C.untrust zone
D.management zone

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多项选择题

A.family inet
B.a security zone
C.a routing instance
D.host-inbound-traffic

多项选择题

Which two configurations are valid？（）

A.A
B.B
C.C
D.D

多项选择题

A.from a zone to the device itself
B.from a zone to the same zone
C.from a zone to a different zone
D.from one interface to another interface