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  1. The variable used as a handle to an open file is ______________.
    1. $sth
    2. $dbh
    3. $h
    4. $fh
    5. None of these
Correct Option: D

The variable named ‘$fh’ is a handle to an open file. ‘$h’ is a generic handle and the meaning depends on context. ‘$dbh’ is a handle to a database object. ‘$sth’ is a handle to a query object.


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