单项选择题

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

A. symmetric key encryption
B. asymmetric key encryption
C. RSA
D. digital certificates

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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
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