Which two file types must be included in a closed database backup taken with operating system commands？（）

A.The dispatcher returns the response to the user.
B.The dispatcher places the request into the request queue.
C.The shared server places the response in the response queue.
D.The response is handed off to the next available dispatcher.
E.A shared server picks up the request from the request queue and processes the request.

A.Enter the keyword AUTO.
B.Enter the keyword CANCEL.
C.Press the Enter or Return key.
D.Enter the filename ’/disk1/archive/log2a.rdo’.