System Analysis and Design
Which of the following statements is not true

a checksum digit is used for detecting Errors in data transmission
All of these
None of these
pointers are useful in traversing a linked list
at example of a hierarchical data structure is tree

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System Analysis and Design
Unit testing is

is checking the logic of one or more programs in the candidate system
running the system with line data by the actual user
making sure that the new programs do in fact process certain transactions according to Specifications
testing changes made in an existing or a new program
None of these

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