单项选择题

A file named "core" exists in the current directory. Which of the following commands should be used to determine what created the "core" file?（）

A. dump -t core
B. strings core
C. trace -a core
D. crash core /unix_up

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单项选择题

Whichofthefollowingoptionsindicateswhyitisimportanttotalktotheuserandaskappropriatequestionsaboutasoftwareproblem?（）

A.Software problems don't generate errors.
B.The user is more knowledgeable about software.
C.The system logs will provide useful information alone.
D.Key information pertaining to the software may be uncovered.

单项选择题

To examine the Exhibit, press the Exhibit button. Using the information provided in the exhibit, which of the following options indicates the date and time that the file system ran out of room?（）

A.Mon Mar 20 14:01:00
B.Sun Mar 19 18:40:00
C.Fri Feb 20 12:28:00
D.Wed May 04 03:19:10