You need to create a user on your Red Hat Enterprise Linux system. What command should you use?
A. newaccount
B. userconf
C. useradd
D. moduser
Answer: C
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The new operator:
(a) allocates memory (b) is used to create an object of a class (c) associates an object with a variable that names it. (d) All of the above.
Find the error(s) in the following code. This is the definition for an actionPerformed event handler for a JButton. This event handler should draw a rectangle on a JPanel. Assume that the classes used are those from the Drawing Shapes application.
``` 1 private void drawImageJButtonActionPerformed( ActionEvent event ) 2 { 3 // set shape 4 MyShape rectangle = new MyRectangle( 2, 3, 40, 30 ); 5 6 // set color 7 rectangle.setColor( Color.ORANGE ); 8 9 // add rectangle to shapesArrayList 10 shapesArrayList.add( rectangle ); 11 12 } // end method drawImageJButtonActionPerformed ```
The Excel feature that outlines all of the cells referenced in a formula is the:
A) Range finder B) Formula finder C) Cell finder
Validation rules prevent invalid data from being entered into a field
Indicate whether the statement is true or false