单项选择题

You have recently completed the creation of a new application.
Certkiller .com requires you to ensure that this new application creates a file that contains an array of bytes.
What should you do?（）

A.
B.
C.
D.

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单项选择题

Certkiller .com has asked you to create a file management application to monitor the hosts file. Certkiller .com has instructed you to change the hosts file if it has been changed. You, therefore, need to display the size and whether the hosts file is set to read-only. What should you do?（）

A.
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单项选择题

Certkiller.com has asked you to create an application to display all of the top directories based on the drive path.You need to ensure that the application displays the number of files within top-level directories.What should you do?（）

A.
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