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

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

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System Analysis and Design
Which of the following is not a characteristic of structured system development?

None of these
specification of the interfaces between modules
partitioning of systems into manageable levels of detail
All of these
the use of graphical tools, such as data-flow diagrams, to model system

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