System Analysis and Design
A system design is said to be functionally modular if

the system makes extensive use of function. keys for maximum user assistance
the system is developed using structured programming through COBOL or PASCAL
the system is able to handle all the function of the application
None of these
each module performs a specific function and can be developed relatively independently by programmers

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System Analysis and Design
A couple:

is represented by a line joining two modules
None of these
is a data item that moves from one module to another
means that the upper module has the capability of calling the lower module
None of these

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