Correct Answer: C,E
Explanation/Reference:
Explanation:
Note: LOG_ARCHIVE_DEST_n specifies an alternate archiving destination to be used when the original destination fails.
The ALTERNATE attribute is optional. If an alternate destination is not specified, then redo transport services do not automatically change to another destination if the original destination fails.
References: https://docs.oracle.com/cd/B28359_01/server.111/b28294/log_arch_dest_param.htm
https://docs.oracle.com/database/121/SQLRF/statements_6017.htm#SQLRF01314