单项选择题
Which zone type will allow transit-traffic?（）
A.system B.security C.default D.functional
单项选择题 Which statement is true regarding a session key in the Diffie-Hellman key-exchange process?（）
多项选择题 Which two statements about the use of SCREEN options are correct? （）(Choose two.)
多项选择题 Which two statements about static NAT are true? （）(Choose two.)
