System Analysis and Design
Pointers are useful in

Pointing mistakes in input data
None of these
Locating a particular sector of a magnetic disk
Traversing a linked list
All of these

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System Analysis and Design
Reverse video is a technique of

showing data upside down on the screen
showing data with half brightness
None of these
emphasizing data by reversing the foreground and background
hiding confidential data on the screen

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