Which encryption type is used to secure user data in an IPsec tunnel?（）

单项选择题Which command shows the event and traceoptions file for chassis clusters?（）

A. show log chassisd
B. show log clusterd
C. show log jsrpd
D. show log messages

多项选择题Which three contexts can be used as matching conditions in a source NAT configuration? （）(Choose three.)

A. routing-instance
B. zone
C. interface
D. policy
E. rule-set