System Analysis and Design
Main characteristic of "ring", in Data structure, is

Last record points to the first record
Many records point to one record
Each record points to all other records
First record points only to the last record

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System Analysis and Design
Reverse video is a technique of

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

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